1.Stereotactic body radiation therapy for elderly patients with small hepatocellular carcinoma: a retrospective observational study
Jeong Yun JANG ; Jinhong JUNG ; Danbi LEE ; Ju Hyun SHIM ; Kang Mo KIM ; Young-Suk LIM ; Han Chu LEE ; Jin-hong PARK ; Sang Min YOON
Journal of Liver Cancer 2022;22(2):136-145
		                        		
		                        			 Background:
		                        			/Aim: We aimed to investigate the efficacy and safety of stereotactic body radiation therapy (SBRT) in elderly patients with small hepatocellular carcinomas (HCC). 
		                        		
		                        			Methods:
		                        			Eighty-three patients (89 lesions) with HCC who underwent SBRT between January 2012 and December 2018 were reviewed in this retrospective observational study. The key inclusion criteria were as follows: 1) age ≥75 years, 2) contraindications for hepatic resection or percutaneous ablative therapies, 3) no macroscopic vascular invasion, and 4) no extrahepatic metastasis. 
		                        		
		                        			Results:
		                        			The patients were 75-90 years of age, and 49 (59.0%) of them were male. Most patients (94.0%) had an Eastern Cooperative Oncology Group performance status of 0 or 1. Seventy-four patients (89.2%) had Child-Pugh class A hepatic function before SBRT. The median tumor size was 1.6 cm (range, 0.7-3.5). The overall median follow-up period was 34.8 months (range, 7.3-99.3). The 5-year local tumor control rate was 90.1%. The 3-year and 5-year overall survival rate was 57.1% and 40.7%, respectively. Acute toxicity grade ≥3 was observed in three patients (3.6%) with elevated serum hepatic enzymes; however, no patient experienced a worsening of the Child-Pugh score to ≥2 after SBRT. None of the patients developed late toxicity (grade ≥3). 
		                        		
		                        			Conclusions
		                        			SBRT is a safe treatment option with a high local control rate in elderly patients with small HCC who are not eligible for other curative treatments. 
		                        		
		                        		
		                        		
		                        	
2.Discontinuation Rate of Newly Prescribed Donepezil in Alzheimer’s Disease Patients in Asia
Kee Hyung PARK ; YoungSoon YANG ; Christopher CHEN ; Yong S. SHIM ; Jacqueline C. DOMINGUEZ ; Chan-Nyoung LEE ; Kyunghun KANG ; Hee-Jin KIM ; Seul-Ki JEONG ; Jee Hyang JEONG ; Zhen HONG ; Soo Jin YOON ; Zhen-Xin ZHANG ; Eun-Joo KIM ; Jae-Won JANG ; Yansheng LI ; Yun XU ; Yu-Te LIN ; Qiumin QU ; Chaur-Jong HU ; Chih-Ho CHOU ; Dongsheng FAN ; Nagaendran KANDIAH ; Yuan-Han YANG ; Chi-ieong LAU ; Leung-Wing CHU ; Huali WANG ; San JUNG ; Seong Hye CHOI ; SangYun KIM
Journal of Clinical Neurology 2021;17(3):376-384
		                        		
		                        			Background:
		                        			and Purpose The rate of donepezil discontinuation and the underlying reasons for discontinuation in Asian patients with Alzheimer’s disease (AD) are currently unknown. We aimed to determine the treatment discontinuation rates in AD patients who had newly been prescribed donepezil in routine clinical practice in Asia. 
		                        		
		                        			Methods:
		                        			This 1-year observational study involved 38 institutions in seven Asian countries, and it evaluated 398 participants aged 50–90 years with a diagnosis of probable AD and on newly prescribed donepezil monotherapy. The primary endpoint was the rate of donepezil discontinuation over 1 year. Secondary endpoints included the reason for discontinuation,treatment duration, changes in cognitive function over the 1-year study period, and compliance as assessed using a clinician rating scale (CRS) and visual analog scale (VAS). 
		                        		
		                        			Results:
		                        			Donepezil was discontinued in 83 (20.9%) patients, most commonly due to an adverse event (43.4%). The mean treatment duration was 103.67 days in patients who discontinued. Among patients whose cognitive function was assessed at baseline and 1 year, there were no significant changes in scores on the Mini-Mental State Examination, Montreal Cognitive Assessment, and Trail-Making Test–Black and White scores, whereas the Clinical Dementia Rating score increased significantly (p<0.001). Treatment compliance at 1 year was 96.8% (306/316) on the CRS and 92.6±14.1% (mean±standard deviation) on the VAS. 
		                        		
		                        			Conclusions
		                        			In patients on newly prescribed donepezil, the primary reason for discontinuation was an adverse event. Cognitive assessments revealed no significant worsening at 1 year, indicating that continuous donepezil treatment contributes to the maintenance of cognitive function.
		                        		
		                        		
		                        		
		                        	
3.Discontinuation Rate of Newly Prescribed Donepezil in Alzheimer’s Disease Patients in Asia
Kee Hyung PARK ; YoungSoon YANG ; Christopher CHEN ; Yong S. SHIM ; Jacqueline C. DOMINGUEZ ; Chan-Nyoung LEE ; Kyunghun KANG ; Hee-Jin KIM ; Seul-Ki JEONG ; Jee Hyang JEONG ; Zhen HONG ; Soo Jin YOON ; Zhen-Xin ZHANG ; Eun-Joo KIM ; Jae-Won JANG ; Yansheng LI ; Yun XU ; Yu-Te LIN ; Qiumin QU ; Chaur-Jong HU ; Chih-Ho CHOU ; Dongsheng FAN ; Nagaendran KANDIAH ; Yuan-Han YANG ; Chi-ieong LAU ; Leung-Wing CHU ; Huali WANG ; San JUNG ; Seong Hye CHOI ; SangYun KIM
Journal of Clinical Neurology 2021;17(3):376-384
		                        		
		                        			Background:
		                        			and Purpose The rate of donepezil discontinuation and the underlying reasons for discontinuation in Asian patients with Alzheimer’s disease (AD) are currently unknown. We aimed to determine the treatment discontinuation rates in AD patients who had newly been prescribed donepezil in routine clinical practice in Asia. 
		                        		
		                        			Methods:
		                        			This 1-year observational study involved 38 institutions in seven Asian countries, and it evaluated 398 participants aged 50–90 years with a diagnosis of probable AD and on newly prescribed donepezil monotherapy. The primary endpoint was the rate of donepezil discontinuation over 1 year. Secondary endpoints included the reason for discontinuation,treatment duration, changes in cognitive function over the 1-year study period, and compliance as assessed using a clinician rating scale (CRS) and visual analog scale (VAS). 
		                        		
		                        			Results:
		                        			Donepezil was discontinued in 83 (20.9%) patients, most commonly due to an adverse event (43.4%). The mean treatment duration was 103.67 days in patients who discontinued. Among patients whose cognitive function was assessed at baseline and 1 year, there were no significant changes in scores on the Mini-Mental State Examination, Montreal Cognitive Assessment, and Trail-Making Test–Black and White scores, whereas the Clinical Dementia Rating score increased significantly (p<0.001). Treatment compliance at 1 year was 96.8% (306/316) on the CRS and 92.6±14.1% (mean±standard deviation) on the VAS. 
		                        		
		                        			Conclusions
		                        			In patients on newly prescribed donepezil, the primary reason for discontinuation was an adverse event. Cognitive assessments revealed no significant worsening at 1 year, indicating that continuous donepezil treatment contributes to the maintenance of cognitive function.
		                        		
		                        		
		                        		
		                        	
4.Development of a modified trauma and injury severity score to predict disability in acute trauma patients
Ki Jeong HONG ; Kyoung Jun SONG ; Sang Do SHIN ; Young Sun RO ; Jeong Ho PARK ; Seung Chul LEE ; Chu Hyun KIM
Clinical and Experimental Emergency Medicine 2020;7(4):281-289
		                        		
		                        			 Objective:
		                        			The Trauma and Injury Severity Score (TRISS) has been used to predict trauma patient mortality and to assess the quality of trauma care systems. The goal of this investigation was to develop a modified trauma-related injury severity score (termed the TRISS-D) for predicting disability in acute trauma patients. 
		                        		
		                        			Methods:
		                        			We used data collected by emergency medical services and entered into the Korea Centers for Disease Control and Prevention severe trauma database. The TRISS-D was based on age category (0–14, 15–54, ≥55 years), the Revised Trauma Score, and the Injury Severity Score. The outcome measures were severe disability and worsening disability. Worsening disability was defined as a lower Glasgow Outcome Scale score at hospital discharge than before the traumatic incident. Two types of cases were examined: those with penetrating or blunt injuries (group 1) and those with severe head injuries (group 2). We assessed the discriminatory power of the TRISS-D by calculating the area under a receiver operating characteristic curve (AUROC). 
		                        		
		                        			Results:
		                        			The database comprised 14,791 patients; overall, 3,757 (25%) had severe disability and 6,018 (41%) had worsening disability. For severe disability, the AUROC (95% confidence interval) for the TRISS-D was 0.948 (0.944–0.952) in group 1 and 0.950 (0.946–0.954) in group 2. The corresponding values for worsening disability were 0.810 (0.803–0.817) and 0.816 (0.809–0.823), respectively. 
		                        		
		                        			Conclusion
		                        			The TRISS-D showed excellent discriminatory power for severe disability and very good discriminatory power for worsening disability. 
		                        		
		                        		
		                        		
		                        	
5.Comparison of trauma systems in Asian countries: a cross-sectional study
Young Hee JUNG ; Dae Han WI ; Sang Do SHIN ; Hideharu TANAKA ; Goh E SHAUN ; Wen Chu CHIANG ; Jen Tang SUN ; Li Min HSU ; Kentaro KAJINO ; Sabariah Faizah JAMALUDDIN ; Akio KIMURA ; James F HOLMES ; Kyoung Jun SONG ; Young Sun RO ; Ki Jeong HONG ; Sung Woo MOON ; Ju Ok PARK ; Min Jung KIM
Clinical and Experimental Emergency Medicine 2019;6(4):321-329
		                        		
		                        			
		                        			OBJECTIVE: This study aimed to compare the demographic characteristics and trauma service structures and processes of hospitals in 15 countries across the Asia Pacific, and to provide baseline data for the integrated trauma database: the Pan-Asian Trauma Outcomes Study (PATOS).METHODS: Medical directors and emergency physicians at PATOS-participating hospitals in countries across the Asia Pacific were surveyed through a standardized questionnaire. General information, trauma care system data, and trauma emergency department (ED) outcomes at each hospital were collected by email and analyzed using descriptive statistics.RESULTS: Survey data from 35 hospitals across 15 countries were collected from archived data between June 2014 and July 2015. Designated trauma centers were identified as the highest hospital level for trauma patients in 70% of surveyed countries. Half of the hospitals surveyed had special teams for trauma care, and almost all prepared activation protocol documents for these teams. Most hospitals offered specialized trauma education programs, and 72.7% of hospitals had a hospital-based trauma registry. The total number of trauma patients visiting the ED across 25 of the hospitals was 300,376. The overall survival-to-discharge rate was 97.2%; however, it varied greatly between 85.1% and 99.7%. The difference between survival-to-discharge rates of moderate and severe injury groups was highest in Taiwan (41.8%) and lowest in Thailand (18.6%).CONCLUSION: Trauma care systems and ED outcomes vary widely among surveyed hospitals and countries. This information is useful to build further detailed, systematic platforms for trauma surveillance and evidence-based trauma care policies.
		                        		
		                        		
		                        		
		                        			Asia
		                        			;
		                        		
		                        			Asian Continental Ancestry Group
		                        			;
		                        		
		                        			Cross-Sectional Studies
		                        			;
		                        		
		                        			Education
		                        			;
		                        		
		                        			Electronic Mail
		                        			;
		                        		
		                        			Emergencies
		                        			;
		                        		
		                        			Emergency Service, Hospital
		                        			;
		                        		
		                        			Epidemiology
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Physician Executives
		                        			;
		                        		
		                        			Taiwan
		                        			;
		                        		
		                        			Thailand
		                        			;
		                        		
		                        			Trauma Centers
		                        			
		                        		
		                        	
6.GATA1 Expression in BCR/ABL1-negative Myeloproliferative Neoplasms.
Naery YANG ; Sholhui PARK ; Min Sun CHO ; Miae LEE ; Ki Sook HONG ; Yeung Chul MUN ; Chu Myong SEONG ; Hee Jin HUH ; Jungwon HUH
Annals of Laboratory Medicine 2018;38(4):296-305
		                        		
		                        			
		                        			BACKGROUND: This study aimed to determine GATA1 expression levels to better characterize subgroups in BCR/ABL1-negative myeloproliferative neoplasms (MPNs). METHODS: This study enrolled 49 patients diagnosed as having BCR/ABL1-negative MPN on the basis of the 2016 World Health Organization classification : nine polycythemia vera (PV), 17 essential thrombocythemia (ET), 12 prefibrotic primary myelofibrosis (prePMF), and 11 overt primary myelofibrosis (PMF). Relevant clinical and laboratory data were retrieved from the medical records. The molecular analysis of CALR and MPL mutations and quantification of JAK2 V617F allele burden were performed. GATA1 expression was assessed by an immunohistochemical assay on bone marrow biopsy. GATA1 expression was analyzed serially in 18 patients. RESULTS: GATA1 expression decreased significantly in PMF compared with that in other subtypes, while no statistical difference was identified between ET and prePMF. GATA1 expression did not differ according to the mutation profiles or the allele burden of JAK2 V617F, but it decreased significantly in patients with overt fibrosis or leukemic transformation. CONCLUSIONS: Our results suggest that GATA1 expression is significantly low in PMF and decreases with progressive fibrosis and possibly with leukemic transformation, although our attempt to accurately distinguish between subgroups using GATA1 immunohistochemical approach did not achieve statistical significance. A large patient cohort with long term follow-up is required to evaluate the prognostic value of GATA1 expression.
		                        		
		                        		
		                        		
		                        			Alleles
		                        			;
		                        		
		                        			Biopsy
		                        			;
		                        		
		                        			Bone Marrow
		                        			;
		                        		
		                        			Classification
		                        			;
		                        		
		                        			Cohort Studies
		                        			;
		                        		
		                        			Fibrosis
		                        			;
		                        		
		                        			Follow-Up Studies
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Medical Records
		                        			;
		                        		
		                        			Polycythemia Vera
		                        			;
		                        		
		                        			Primary Myelofibrosis
		                        			;
		                        		
		                        			Thrombocythemia, Essential
		                        			;
		                        		
		                        			World Health Organization
		                        			
		                        		
		                        	
7.Effects on Quality of Life in Patients with Neurogenic Bladder treated with Clean Intermittent Catheterization: Change from Multiple Use Catheter to Single Use Catheter.
Chu Hong PARK ; Gwan JANG ; Dong Young SEON ; In Young SUN ; Chi Hyun AHN ; Ho Young RYU ; Sang Heon LEE ; Kwang Myeong KIM
Childhood Kidney Diseases 2017;21(2):142-146
		                        		
		                        			
		                        			PURPOSE: To evaluate changes in quality of life (QoL) in patients with neurogenic bladder treated with clean intermittent catheterization (CIC), who changed from a multiple use catheter (MUC) to single use catheter (SUC). METHODS: The Modified Intermittent Self-Catheterization Questionnaire (mISC-Q) was used to determine potential changes in patients'QoL as a result of switching from MUC to SUC. The mISC-Q consists of questions within four categories: ease of use, convenience, discreetness, and symptomatic benefit. Answers were graded as Strongly agree (+2), Agree (+1), Not sure (0), Disagree (−1), and Strongly disagree (−2). Overall patient QoL, as well as by sex, disease (presence of augmentation cystoplasty), and catheterization route (via urethra or urinary diversion), were analyzed. RESULTS: Thirty-eight patients (21M:17F; mean age: 21.7±5.3 y) submitted questionnaires. For ease of use, SUC was significantly better than MUC (score: 0.364, P=0.002) in all patients. Patients with catheterization via the urethra showed significant favor for SUC in ease of use (score: 0.512, P<0.001) and convenience (score: 0.714, P=0.011), but patients with catheterization via the abdominal stoma of urinary diversion gave negative scores in all categories, though no categories were significant. CONCLUSION: This study suggested that changing from MUC to SUC may lead to improvements in QoL, especially regarding ease of use. This benefit was clearly found in patients with catheterization via urethra rather than abdominal stoma of urinary diversion.
		                        		
		                        		
		                        		
		                        			Catheterization
		                        			;
		                        		
		                        			Catheters*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Intermittent Urethral Catheterization*
		                        			;
		                        		
		                        			Quality of Life*
		                        			;
		                        		
		                        			Urethra
		                        			;
		                        		
		                        			Urinary Bladder, Neurogenic*
		                        			;
		                        		
		                        			Urinary Diversion
		                        			
		                        		
		                        	
8.Effects on Quality of Life in Patients with Neurogenic Bladder treated with Clean Intermittent Catheterization: Change from Multiple Use Catheter to Single Use Catheter.
Chu Hong PARK ; Gwan JANG ; Dong Young SEON ; In Young SUN ; Chi Hyun AHN ; Ho Young RYU ; Sang Heon LEE ; Kwang Myeong KIM
Childhood Kidney Diseases 2017;21(2):142-146
		                        		
		                        			
		                        			PURPOSE: To evaluate changes in quality of life (QoL) in patients with neurogenic bladder treated with clean intermittent catheterization (CIC), who changed from a multiple use catheter (MUC) to single use catheter (SUC). METHODS: The Modified Intermittent Self-Catheterization Questionnaire (mISC-Q) was used to determine potential changes in patients'QoL as a result of switching from MUC to SUC. The mISC-Q consists of questions within four categories: ease of use, convenience, discreetness, and symptomatic benefit. Answers were graded as Strongly agree (+2), Agree (+1), Not sure (0), Disagree (−1), and Strongly disagree (−2). Overall patient QoL, as well as by sex, disease (presence of augmentation cystoplasty), and catheterization route (via urethra or urinary diversion), were analyzed. RESULTS: Thirty-eight patients (21M:17F; mean age: 21.7±5.3 y) submitted questionnaires. For ease of use, SUC was significantly better than MUC (score: 0.364, P=0.002) in all patients. Patients with catheterization via the urethra showed significant favor for SUC in ease of use (score: 0.512, P<0.001) and convenience (score: 0.714, P=0.011), but patients with catheterization via the abdominal stoma of urinary diversion gave negative scores in all categories, though no categories were significant. CONCLUSION: This study suggested that changing from MUC to SUC may lead to improvements in QoL, especially regarding ease of use. This benefit was clearly found in patients with catheterization via urethra rather than abdominal stoma of urinary diversion.
		                        		
		                        		
		                        		
		                        			Catheterization
		                        			;
		                        		
		                        			Catheters*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Intermittent Urethral Catheterization*
		                        			;
		                        		
		                        			Quality of Life*
		                        			;
		                        		
		                        			Urethra
		                        			;
		                        		
		                        			Urinary Bladder, Neurogenic*
		                        			;
		                        		
		                        			Urinary Diversion
		                        			
		                        		
		                        	
9.Characteristics of Emergency Medical Service Provider Responded Chemical, Biological, Radiological, and Nuclear Incidents: Pilot Analysis of National Emergency Medical Service Rescue Records.
Jeong Ho PARK ; Ju OK PARK ; Joo JEONG ; Ki Jeong HONG ; Tae Han KIM ; Sung Wook SONG ; Chu Hyun KIM ; Sang Do SHIN
Journal of the Korean Society of Emergency Medicine 2016;27(3):260-271
		                        		
		                        			
		                        			PURPOSE: The aim of this study was to evaluate the characteristics of Emergency Medical Service (EMS) provider responded chemical, biological, radiological, and nuclear (CBRN) incidents in Korea. METHODS: Nationwide EMS rescue records from Jan 2012 to Dec 2014 were analyzed. All EMS rescue records were integrated according to the unique accident ID. Cases related to animal rescue, hive removal, and suicide-related were excluded. CBRN-associated keywords were extracted by literature review and pilot survey. In-depth review of cases containing CBRN-associated keywords in the activity summary were conducted by trained emergency medical technicians, and predefined information was abstracted. Descriptive analyses were performed to characterize the EMS provider responded CBRN incidents. RESULTS: A total of 1,571,293 cases were included, and 1,335,205 cases had a unique accident ID; 515,417 cases were excluded because of their association with animal rescue, hive removal, and suicide attempts; 19,663 cases contained CBRN-associated keywords in the activity summary, and in-depth review identified 1,862 cases as CBRN incidents. Among them 1,856 cases were chemical incidents, and 6 cases were radiological incidents; 144 cases were resulted to victims. In chemical incidents, ammonia, hydrogen chloride, sulfuric acid, hydrogen fluoride, and nitric acid were the top 5 toxic substances. In chemical incidents with victims, the proportion of explosion/implosion, and suffocation in sealed space was more prevalent than chemical incidents without victims. Median scene time of all CBRN incidents was 41 minutes (interquartile range 18.0-57.0). CONCLUSION: We evaluated the characteristics of CBRN incidents responded by EMS in Korea.
		                        		
		                        		
		                        		
		                        			Ammonia
		                        			;
		                        		
		                        			Animals
		                        			;
		                        		
		                        			Asphyxia
		                        			;
		                        		
		                        			Biohazard Release
		                        			;
		                        		
		                        			Chemical Hazard Release
		                        			;
		                        		
		                        			Emergencies*
		                        			;
		                        		
		                        			Emergency Medical Services*
		                        			;
		                        		
		                        			Emergency Medical Technicians
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Hydrochloric Acid
		                        			;
		                        		
		                        			Hydrofluoric Acid
		                        			;
		                        		
		                        			Korea
		                        			;
		                        		
		                        			Nitric Acid
		                        			;
		                        		
		                        			Radioactive Hazard Release
		                        			;
		                        		
		                        			Suicide
		                        			;
		                        		
		                        			Sulfur
		                        			
		                        		
		                        	
10.Changing Prevalence of Helicobacter pylori Infections in Korean Children with Recurrent Abdominal Pain.
Kyung Mi JANG ; Byung Ho CHOE ; Jae Young CHOE ; Suk Jin HONG ; Hyo Jung PARK ; Mi Ae CHU ; Seung Man CHO ; Jung Mi KIM
Pediatric Gastroenterology, Hepatology & Nutrition 2015;18(1):10-16
		                        		
		                        			
		                        			PURPOSE: The aim of this study is to investigate the changing prevalence rate of Helicobacter pylori infection in children, of different age groups, with recurrent abdominal pain over a 10-year period. METHODS: Children with recurrent abdominal pain who visited the pediatric outpatient clinic at university hospital were screened for H. pylori. Children were divided into 3 age categories of 4-5, 6-11, and 12-16 years. To study the changes in the annual prevalence rates of H. pylori infection, the study period was divided into 3 time periods: 2004-2007, 2008-2010, and 2011-2014. Urea breath test was performed for all children aged 4-16 years, with a cut-off value of 4.0per thousand for children aged > or =6 years and 7per thousand for children aged <6 years. RESULTS: A total of 2,530 children (1,191 boys) with a mean age of 10.0+/-3.0 years (range, 4.0-16.9 years) were included in the study. The total prevalence of H. pylori infection was 7.4% (187/2,530). The prevalence rate of H. pylori infection in children with recurrent abdominal pain was 8.0% (70/873) in 2004-2007, 7.7% (51/666) in 2008-2010, and 6.7% (66/991) in the 2011-2014. Nevertheless, a significant difference was observed in the prevalence rate between children <12 years old and > or =12 years of age (p=0.018). CONCLUSION: The prevalence of H. pylori infection in Korean children with recurrent abdominal pain was 7.4%, showing no significant decrease in the last 11 years; however, the prevalence rate in children <12 years old was significantly lower than that in those > or =12 years old.
		                        		
		                        		
		                        		
		                        			Abdominal Pain*
		                        			;
		                        		
		                        			Ambulatory Care Facilities
		                        			;
		                        		
		                        			Breath Tests
		                        			;
		                        		
		                        			Child*
		                        			;
		                        		
		                        			Endoscopy
		                        			;
		                        		
		                        			Gastrointestinal Diseases
		                        			;
		                        		
		                        			Helicobacter
		                        			;
		                        		
		                        			Helicobacter pylori*
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Prevalence*
		                        			;
		                        		
		                        			Urea
		                        			
		                        		
		                        	
            
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