1.Alzheimer's disease diagnosis among dementia patients via blood biomarker measurement based on the AT(N) system.
Tianyi WANG ; Li SHANG ; Chenhui MAO ; Longze SHA ; Liling DONG ; Caiyan LIU ; Dan LEI ; Jie LI ; Jie WANG ; Xinying HUANG ; Shanshan CHU ; Wei JIN ; Zhaohui ZHU ; Huimin SUI ; Bo HOU ; Feng FENG ; Bin PENG ; Liying CUI ; Jianyong WANG ; Qi XU ; Jing GAO
Chinese Medical Journal 2025;138(12):1505-1507
2.Variability of remnant cholesterol inflammation index exhibits a dose-response relationship with stroke risk:Evidence from the Chinese Kailuan cohort
Liuliu CAO ; Man LI ; Zhaohui WU ; Maolin ZHAO ; Baohua WANG ; Li ZHANG ; Peng LI ; Yongna YANG ; Weiguo ZHENG ; Haiyan ZHAO ; Shuohua CHEN ; Shouling WU ; Lixia SUN
Journal of Army Medical University 2025;47(22):2847-2857
Objective To investigate the association between the variability of remnant cholesterol inflammatory index(RCII),a novel composite biomarker,and the risk of stroke,in order to provide a theoretical basis for stroke prevention.Methods A prospective cohort study was conducted on 38 659 Kailuan individuals who took annual physical examinations in 2006,2008,and 2010.These subjects were grouped based on the quartiles of RCII variability,which was represented by standard deviation(SD)and average real variability(ARV),and were followed up every 2 years,with the occurrence of stroke(including ischemic and hemorrhagic strokes),death,or the end of follow-up on December 31,2022 as the endpoints.Kaplan-Meier method was used to calculate the cumulative incidence rate of endpoint events across different groups,and log-rank test was used to compare the difference of cumulative incidence of endpoint events in each group.Multivariate Cox proportional hazards regression model was adopted to analyze the association between RCII variability and risk of stroke.Results Among the 38 659 participants,a total of 2 539 strokes occurred during a mean follow-up period of 11.22±2.26 years.After adjusting confounding factors,when the participants were grouped by the quartiles of RCII-SD,the hazard ratio(HR)for stroke was 1.034(95%CI:0.917~1.167,P=0.584),1.146(95%CI:1.018~1.290,P=0.025),and 1.209(95%CI:1.066~1.370,P=0.003),respectively in the Q2,Q3,and Q4 groups,when compared with the Q1 group(Ptrend<0.05).When they were grouped by the quartiles of RCII-ARV,the HR for stroke was 1.008(95%CI:0.894~1.136,P=0.901),1.109(95%CI:0.986~1.248,P=0.085),and 1.152(95%CI:1.018~1.303,P=0.025),respectively,in the Q2,Q3,and Q4 groups,when compared with the Q1 group.Furthermore,both sensitivity and stratified analyses yielded similar results.Conclusion RCII variability is significantly associated with stroke,and the risk of stroke is gradually increasing with increment of the variability.Countermeasures Relevant authorities can focus on reducing RCII variability as a central objective by establishing regular monitoring mechanism,strengthening lifestyle interventions,and standardizing dietary,exercise,and weight management in order to suppress the index fluctuations.The principle of stable lipid-lowering in medication and optimization of therapeutic regimens with stable efficacy should be emphasized to prevent the risk of additional vascular damage.
3.Analysis of the efficacy of left subclavian artery laser in situ fenestration combined with hybrid arch debranching surgery for aortic arch reconstruction in patients with Stanford type A aortic dissection
Qi ZHANG ; Shuai ZHANG ; Shirui LIU ; Zhaohui HUA ; Zhouyang JIAO ; Peng XU ; Hui CAO ; Zhen LI
Chinese Journal of Surgery 2024;62(7):703-709
Objective:To observe the short-and mid-term efficacy of left subclavian artery(LSA) laser in situ fenestration combined with arch debranching surgery for aortic arch reconstruction in patients with Stanford type A aortic dissection aged 60 years and above. Methods:This is a retrospective cohort study. A total of 41 Stanford type A aortic dissection patients aged 60 years and above who received combined surgery in Department of Endovascular Surgery, the First Affiliated Hospital of Zhengzhou University from January 2018 to December 2020 were retrospectively analyzed. There were 25 males and 16 females, aged (67.3±5.9)years(range: 60 to 75 years). Among them, 19 patients underwent LSA laser in situ fenestration combined with arch debranching surgery(combined surgery group) and 22 patients underwent hybrid aortic arch debranching surgery(non-combined surgery group). Independent sample t test, χ2 test and Fisher exact probability method were used to compare the clinical characteristics of the two groups. Kaplan-Meier method was used for survival analysis, and the 5-year survival rate of the two groups was compared by Log-rank test. Results:Body mass index in the combined operation group was significantly higher than that in the non-combined operation group ((27.1±1.6)kg/m 2vs.(26.9±1.9)kg/m 2; t=2.766, P=0.006), and the difference was statistically significant. There was no statistical significance in the comparison of other general data (all P>0.05). The operation time ((321.3±11.4) minutes vs. (329.6±7.3)minutes; t=-2.733, P=0.010) and LSA reconstruction time ((32.4±3.0)minutes vs. (42.4±6.0)minutes; t=-6.842, P<0.01) in the combined operation group were significantly shortened, and the difference was statistically significant. The rate of LSA reconstruction in the combined operation group (100% vs. 72.7%; P=0.023) was significantly higher than that in the non-combined operation group, and the difference was statistically significant. There were no significant differences in the incidence of pulmonary infection, unplanned second operation, continuous renal replacement therapy, neurological complications and the in-hospital mortality between the two groups. Compared with the non-combined surgery group, the total complication rate related to LSA reconstruction was significantly lower in the combined surgery group (0 vs. 27.3%; P=0.023). Kaplan-Meier survival analysis showed that there was no difference in 5-year survival rate between the combined operation group and the non-combined operation group (84.2% vs. 77.3%; χ2=0.310, P=0.578). Conclusion:Laser in situ fenestration of the LSA combined with arch debranching surgery to reconstruct the aortic arch can significantly shorten the operation and LSA reconstruction time in patients aged 60 years and above with Stanford type A aortic dissection, improve the success rate of LSA reconstruction, and reduce the occurrence rate of LSA reconstruction complications.
4.Mid- and long-term results of surgical treatment of brachiocephalic Takayasu arteritis
Jintao SHAN ; Zhaohui HUA ; Peng XU ; Hui CAO ; Zhouyang JIAO ; Likun SUN ; Shirui LIU ; Lei XIA ; Wenhao XUE ; Zhen LI
Chinese Journal of Surgery 2024;62(3):229-234
Objective:To examine the mid - and long-term outcomes of surgical treatment of brachiocephalic Takayasu arteritis.Methods:This is a retrospective case series study. The clinical data of 39 patients,which had been diagnosed as brachiocephalic Takayasu arteritis (244 cases),who underwent surgical treatment,were analyzed between July 2012 to November 2022 at Department of Endoluminal Vascular Surgery, the First Affiliated Hospital of Zhengzhou University. There were 5 males and 34 females, aged (37.9±14.0)years (range:13 to 71 years). Despite medical treatment, the patients suffered severe ischemic symptoms continually and then underwent surgical interventions. Among them, 20 patients underwent endovascular procedures, 11 underwent open surgical procedures, and 8 underwent hybrid procedures. Patients were followed up through outpatient visits at 1, 3, 6 months after surgery and once every year later. Follow-up was conducted until November 2022. Operation status, postoperative complications and re-intervention of patients were recorded and the Kaplan-Meier survival curves were used to analyze postoperative vascular patency rates.Results:All 39 surgeries were successful, with no intraoperative death or serious complications. The follow-up period was (48.8±38.2) months(range:1 to 123 months). Thirty-three patients experienced symptom relief after surgery, and 6 patients required secondary surgical interventions. The patency rates for the endovascular treatment group at 1-, 3-, 5-, and 10-year were 95.0%, 75.2%, 60.2%, and 60.2%, respectively, while the patency rates for open surgery were all 90.9%. In the hybrid surgery group, the patency rates at 1-, 3-, 5-, and 8-year were all 87.5%.Conclusion:For patients with brachiocephalic Takayasu arteritis, choice of an appropriate blood flow revascularization intervention should be based on the patient′s condition,and the mid-and long-term outcomes are satisfactory.
5.Mid- and long-term results of surgical treatment of brachiocephalic Takayasu arteritis
Jintao SHAN ; Zhaohui HUA ; Peng XU ; Hui CAO ; Zhouyang JIAO ; Likun SUN ; Shirui LIU ; Lei XIA ; Wenhao XUE ; Zhen LI
Chinese Journal of Surgery 2024;62(3):229-234
Objective:To examine the mid - and long-term outcomes of surgical treatment of brachiocephalic Takayasu arteritis.Methods:This is a retrospective case series study. The clinical data of 39 patients,which had been diagnosed as brachiocephalic Takayasu arteritis (244 cases),who underwent surgical treatment,were analyzed between July 2012 to November 2022 at Department of Endoluminal Vascular Surgery, the First Affiliated Hospital of Zhengzhou University. There were 5 males and 34 females, aged (37.9±14.0)years (range:13 to 71 years). Despite medical treatment, the patients suffered severe ischemic symptoms continually and then underwent surgical interventions. Among them, 20 patients underwent endovascular procedures, 11 underwent open surgical procedures, and 8 underwent hybrid procedures. Patients were followed up through outpatient visits at 1, 3, 6 months after surgery and once every year later. Follow-up was conducted until November 2022. Operation status, postoperative complications and re-intervention of patients were recorded and the Kaplan-Meier survival curves were used to analyze postoperative vascular patency rates.Results:All 39 surgeries were successful, with no intraoperative death or serious complications. The follow-up period was (48.8±38.2) months(range:1 to 123 months). Thirty-three patients experienced symptom relief after surgery, and 6 patients required secondary surgical interventions. The patency rates for the endovascular treatment group at 1-, 3-, 5-, and 10-year were 95.0%, 75.2%, 60.2%, and 60.2%, respectively, while the patency rates for open surgery were all 90.9%. In the hybrid surgery group, the patency rates at 1-, 3-, 5-, and 8-year were all 87.5%.Conclusion:For patients with brachiocephalic Takayasu arteritis, choice of an appropriate blood flow revascularization intervention should be based on the patient′s condition,and the mid-and long-term outcomes are satisfactory.
6.Analysis of the efficacy of left subclavian artery laser in situ fenestration combined with hybrid arch debranching surgery for aortic arch reconstruction in patients with Stanford type A aortic dissection
Qi ZHANG ; Shuai ZHANG ; Shirui LIU ; Zhaohui HUA ; Zhouyang JIAO ; Peng XU ; Hui CAO ; Zhen LI
Chinese Journal of Surgery 2024;62(7):703-709
Objective:To observe the short-and mid-term efficacy of left subclavian artery(LSA) laser in situ fenestration combined with arch debranching surgery for aortic arch reconstruction in patients with Stanford type A aortic dissection aged 60 years and above. Methods:This is a retrospective cohort study. A total of 41 Stanford type A aortic dissection patients aged 60 years and above who received combined surgery in Department of Endovascular Surgery, the First Affiliated Hospital of Zhengzhou University from January 2018 to December 2020 were retrospectively analyzed. There were 25 males and 16 females, aged (67.3±5.9)years(range: 60 to 75 years). Among them, 19 patients underwent LSA laser in situ fenestration combined with arch debranching surgery(combined surgery group) and 22 patients underwent hybrid aortic arch debranching surgery(non-combined surgery group). Independent sample t test, χ2 test and Fisher exact probability method were used to compare the clinical characteristics of the two groups. Kaplan-Meier method was used for survival analysis, and the 5-year survival rate of the two groups was compared by Log-rank test. Results:Body mass index in the combined operation group was significantly higher than that in the non-combined operation group ((27.1±1.6)kg/m 2vs.(26.9±1.9)kg/m 2; t=2.766, P=0.006), and the difference was statistically significant. There was no statistical significance in the comparison of other general data (all P>0.05). The operation time ((321.3±11.4) minutes vs. (329.6±7.3)minutes; t=-2.733, P=0.010) and LSA reconstruction time ((32.4±3.0)minutes vs. (42.4±6.0)minutes; t=-6.842, P<0.01) in the combined operation group were significantly shortened, and the difference was statistically significant. The rate of LSA reconstruction in the combined operation group (100% vs. 72.7%; P=0.023) was significantly higher than that in the non-combined operation group, and the difference was statistically significant. There were no significant differences in the incidence of pulmonary infection, unplanned second operation, continuous renal replacement therapy, neurological complications and the in-hospital mortality between the two groups. Compared with the non-combined surgery group, the total complication rate related to LSA reconstruction was significantly lower in the combined surgery group (0 vs. 27.3%; P=0.023). Kaplan-Meier survival analysis showed that there was no difference in 5-year survival rate between the combined operation group and the non-combined operation group (84.2% vs. 77.3%; χ2=0.310, P=0.578). Conclusion:Laser in situ fenestration of the LSA combined with arch debranching surgery to reconstruct the aortic arch can significantly shorten the operation and LSA reconstruction time in patients aged 60 years and above with Stanford type A aortic dissection, improve the success rate of LSA reconstruction, and reduce the occurrence rate of LSA reconstruction complications.
7.Efficacy and safety of a single induction dose of cyclopofol in painless four-dimensional hysterosalpingogra-phy
Zhaohui QING ; Xiaolan XIAO ; Shaoqin PENG ; Qingwei XU
The Journal of Practical Medicine 2024;40(22):3221-3225
Objective To investigate the efficacy and safety of a single induction dose of cyclopofol in painless four-dimensional hysterosalpingography,this study aims to assess its academic significance and adherence to Nature journal's publication standards.Methods A total of 120 patients admitted to Guangdong Reproductive Hospital between February 2022 and December 2022,requiring painless vaginal four-dimensional ultrasound hysterosalpin-gography,were selected as the study population.Random selection was performed with 40 patients in each group.The dosage of cyclopofol administered was 0.3 mg/kg(C1 group),0.5 mg/kg(C2 group),and 0.7 mg/kg(C3 group).Heart rate(HR),mean arterial pressure measured non-invasively using a cuff,time to wake after surgery,and incidence of adverse reactions were observed at three time points:before examination(T1),during contrast agent injection(T2),and after examination(T3).Results There were no significant differences in heart rate(HR)and mean arterial pressure(MAP)between T1 and T3 among the three groups(P>0.05).However,at T2,group C1 exhibited significantly higher HR and MAP compared to group C2(P<0.05),while there was no statistically significant difference in HR and MAP between group C2 and C3 at T2(P>0.05).The duration of wakefulness was shorter in group C2 than in group C3(P<0.05),but there was no statistical significance in wakefulness duration between group C1 and C2(P>0.05).The incidence of adverse reactions was lower in group C2(10.0%)compared to both group C1(32.5%)and group C3(37.5%)with statistical significance(P<0.05).Conclusion The admin-istration of cyclopofol at a dosage of 0.5 mg/kg exhibits notable advantages in painless four-dimensional hysterotubal ultrasonography,including effective sedation,prompt wakefulness,and a low occurrence rate of adverse reactions.
8.Efficacy and safety of LY01005 versus goserelin implant in Chinese patients with prostate cancer: A multicenter, randomized, open-label, phase III, non-inferiority trial.
Chengyuan GU ; Zengjun WANG ; Tianxin LIN ; Zhiyu LIU ; Weiqing HAN ; Xuhui ZHANG ; Chao LIANG ; Hao LIU ; Yang YU ; Zhenzhou XU ; Shuang LIU ; Jingen WANG ; Linghua JIA ; Xin YAO ; Wenfeng LIAO ; Cheng FU ; Zhaohui TAN ; Guohua HE ; Guoxi ZHU ; Rui FAN ; Wenzeng YANG ; Xin CHEN ; Zhizhong LIU ; Liqiang ZHONG ; Benkang SHI ; Degang DING ; Shubo CHEN ; Junli WEI ; Xudong YAO ; Ming CHEN ; Zhanpeng LU ; Qun XIE ; Zhiquan HU ; Yinhuai WANG ; Hongqian GUO ; Tiwu FAN ; Zhaozhao LIANG ; Peng CHEN ; Wei WANG ; Tao XU ; Chunsheng LI ; Jinchun XING ; Hong LIAO ; Dalin HE ; Zhibin WU ; Jiandi YU ; Zhongwen FENG ; Mengxiang YANG ; Qifeng DOU ; Quan ZENG ; Yuanwei LI ; Xin GOU ; Guangchen ZHOU ; Xiaofeng WANG ; Rujian ZHU ; Zhonghua ZHANG ; Bo ZHANG ; Wanlong TAN ; Xueling QU ; Hongliang SUN ; Tianyi GAN ; Dingwei YE
Chinese Medical Journal 2023;136(10):1207-1215
BACKGROUND:
LY01005 (Goserelin acetate sustained-release microsphere injection) is a modified gonadotropin-releasing hormone (GnRH) agonist injected monthly. This phase III trial study aimed to evaluated the efficacy and safety of LY01005 in Chinese patients with prostate cancer.
METHODS:
We conducted a randomized controlled, open-label, non-inferiority trial across 49 sites in China. This study included 290 patients with prostate cancer who received either LY01005 or goserelin implants every 28 days for three injections. The primary efficacy endpoints were the percentage of patients with testosterone suppression ≤50 ng/dL at day 29 and the cumulative probability of testosterone ≤50 ng/dL from day 29 to 85. Non-inferiority was prespecified at a margin of -10%. Secondary endpoints included significant castration (≤20 ng/dL), testosterone surge within 72 h following repeated dosing, and changes in luteinizing hormone, follicle-stimulating hormone, and prostate specific antigen levels.
RESULTS:
On day 29, in the LY01005 and goserelin implant groups, testosterone concentrations fell below medical-castration levels in 99.3% (142/143) and 100% (140/140) of patients, respectively, with a difference of -0.7% (95% confidence interval [CI], -3.9% to 2.0%) between the two groups. The cumulative probabilities of maintaining castration from days 29 to 85 were 99.3% and 97.8%, respectively, with a between-group difference of 1.5% (95% CI, -1.3% to 4.4%). Both results met the criterion for non-inferiority. Secondary endpoints were similar between groups. Both treatments were well-tolerated. LY01005 was associated with fewer injection-site reactions than the goserelin implant (0% vs . 1.4% [2/145]).
CONCLUSION:
LY01005 is as effective as goserelin implants in reducing testosterone to castration levels, with a similar safety profile.
TRIAL REGISTRATION
ClinicalTrials.gov, NCT04563936.
Humans
;
Male
;
Antineoplastic Agents, Hormonal/therapeutic use*
;
East Asian People
;
Gonadotropin-Releasing Hormone/agonists*
;
Goserelin/therapeutic use*
;
Prostate-Specific Antigen
;
Prostatic Neoplasms/drug therapy*
;
Testosterone
9.Anatomy of the perforator propeller flap of superior lateral genicular artery and its clinical application in repair of soft tissue defect of anterolateral knee
Zhenhua XU ; Zhaohui YE ; Weiwei CHEN ; Mingjun GUO ; Peng WEI
Chinese Journal of Microsurgery 2023;46(1):89-94
Objective:To study the anatomy of the perforator propeller flap of superior lateral genicular artery, and to explore a surgical method and clinical application in repair of the soft tissue defect of anterolateral knee with the flap.Methods:From September 2019 to September 2021, 8 knees of 4 chilled fresh specimen of adults were studied. The perforators of the superior lateral genicular artery were observed. The length, outer diameter of the perforators, and the locations of the skin perforation were recorded. The superior lateral genicular artery perforator propeller flaps were then applied clinically to 5 patients(3 males and 2 females) with soft tissue defects of anterolateral knee. Two of the patients had combined ligament injury and(or) bone joint exposure. The age of patients ranged from 25 to 48 years old, at 33.4 years old in average. The sizes of soft tissue defects ranged from 4.0 cm×4.0 cm to 8.0 cm×5.0 cm. The sizes of perforator propeller flaps of superior lateral genicular artery were 10.0 cm×5.0 cm to 13.0 cm×6.0 cm. The superior perforating vessels of the superior lateral genicular artery were found and marked at the points of skin perforation. Preoperative contrast-enhanced ultrasound were performed to confirm the dominant perforating vessels and had the skin perforating points marked. Intraoperative CDU were further performed to confirm the points of dominant perforating vessels. Perforator propeller flaps were designed depending on the size of the anterolateral soft tissue defect, and flaps were prepared and transferred to the defect sites. Postoperative follow-ups were conducted at outpatient clinic. The survival of the flap and knee function were observed according to the Bai-ly knee scoring.Results:The anatomy showed that an average pedicle length of the superior lateral genicular artery perforator was(8.2±0.9) cm, with an average starting outer diameter at(1.1±0.2) mm. All 5 flaps survived during the follow-up that lasted for 10 to 24 months, with an average of 15.3 months. All flaps healed in 2 weeks after surgery without complications such as soft tissue infection, bone and joint infection were observed. At the last follow-up, no obvious bloated appearance of the flaps were observed. The colour and elasticity of the flaps were similar to the surrounding skin. The knee function was assessed: 4 patients were in excellent and 1 in good. The range of knee flexion and extension was from 100° to 150°. The patients were satisfied with the appearance and function of the knees.Conclusion:The size of the perforator of superior lateral genicular artery and the pedicle length are ideal. The propeller flap can be used to repair the soft tissue defect around the anterolateral knee, with satisfactory functional recovery of a knee. It is a good method to repair the soft tissue defect around anterolateral knee.
10.Chinese expert consensus on emergency surgery for severe trauma and infection prevention during corona virus disease 2019 epidemic (version 2023)
Yang LI ; Yuchang WANG ; Haiwen PENG ; Xijie DONG ; Guodong LIU ; Wei WANG ; Hong YAN ; Fan YANG ; Ding LIU ; Huidan JING ; Yu XIE ; Manli TANG ; Xian CHEN ; Wei GAO ; Qingshan GUO ; Zhaohui TANG ; Hao TANG ; Bingling HE ; Qingxiang MAO ; Zhen WANG ; Xiangjun BAI ; Daqing CHEN ; Haiming CHEN ; Min DAO ; Dingyuan DU ; Haoyu FENG ; Ke FENG ; Xiang GAO ; Wubing HE ; Peiyang HU ; Xi HU ; Gang HUANG ; Guangbin HUANG ; Wei JIANG ; Hongxu JIN ; Laifa KONG ; He LI ; Lianxin LI ; Xiangmin LI ; Xinzhi LI ; Yifei LI ; Zilong LI ; Huimin LIU ; Changjian LIU ; Xiaogang MA ; Chunqiu PAN ; Xiaohua PAN ; Lei PENG ; Jifu QU ; Qiangui REN ; Xiguang SANG ; Biao SHAO ; Yin SHEN ; Mingwei SUN ; Fang WANG ; Juan WANG ; Jun WANG ; Wenlou WANG ; Zhihua WANG ; Xu WU ; Renju XIAO ; Yang XIE ; Feng XU ; Xinwen YANG ; Yuetao YANG ; Yongkun YAO ; Changlin YIN ; Yigang YU ; Ke ZHANG ; Xingwen ZHANG ; Guixi ZHANG ; Gang ZHAO ; Xiaogang ZHAO ; Xiaosong ZHU ; Yan′an ZHU ; Changju ZHU ; Zhanfei LI ; Lianyang ZHANG
Chinese Journal of Trauma 2023;39(2):97-106
During coronavirus disease 2019 epidemic, the treatment of severe trauma has been impacted. The Consensus on emergency surgery and infection prevention and control for severe trauma patients with 2019 novel corona virus pneumonia was published online on February 12, 2020, providing a strong guidance for the emergency treatment of severe trauma and the self-protection of medical staffs in the early stage of the epidemic. With the Joint Prevention and Control Mechanism of the State Council renaming "novel coronavirus pneumonia" to "novel coronavirus infection" and the infection being managed with measures against class B infectious diseases since January 8, 2023, the consensus published in 2020 is no longer applicable to the emergency treatment of severe trauma in the new stage of epidemic prevention and control. In this context, led by the Chinese Traumatology Association, Chinese Trauma Surgeon Association, Trauma Medicine Branch of Chinese International Exchange and Promotive Association for Medical and Health Care, and Editorial Board of Chinese Journal of Traumatology, the Chinese expert consensus on emergency surgery for severe trauma and infection prevention during coronavirus disease 2019 epidemic ( version 2023) is formulated to ensure the effectiveness and safety in the treatment of severe trauma in the new stage. Based on the policy of the Joint Prevention and Control Mechanism of the State Council and by using evidence-based medical evidence as well as Delphi expert consultation and voting, 16 recommendations are put forward from the four aspects of the related definitions, infection prevention, preoperative assessment and preparation, emergency operation and postoperative management, hoping to provide a reference for severe trauma care in the new stage of the epidemic prevention and control.

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