1.Prevention of Comorbidity and Acute Attack of Gout by Uric Acid Lowering Therapy.
Kowoon JOO ; Seong Ryul KWON ; Mie Jin LIM ; Kyong Hee JUNG ; Hoyeon JOO ; Won PARK
Journal of Korean Medical Science 2014;29(5):657-661
The object of this study was to evaluate the effect of uric acid lowering therapy in reducing the new development of comorbidities and the frequency of acute attacks in gout patients. We retrospectively reviewed patients who were diagnosed to have gout with at least 3 yr of follow up. They were divided into 2 groups; 53 patients with mean serum uric acid level (sUA)<6 mg/dL and 147 patients with mean sUA> or =6 mg/dL. Comorbidities of gout such as hypertension (HTN), type II diabetes mellitus (DM), chronic kidney disease, cardiovascular disease (CVD) and urolithiasis were compared in each group at baseline and at last follow-up visit. Frequency of acute gout attacks were also compared between the groups. During the mean follow up period of 7.6 yr, the yearly rate of acute attack and the new development of HTN, DM, CVD and urolithiasis was lower in the adequately treated group compared to the inadequately treated group. Tight control of uric acid decreases the incidence of acute gout attacks and comorbidities of gout such as HTN, DM, CVD and urolithiasis.
Adult
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Allopurinol/therapeutic use
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Antimetabolites/therapeutic use
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Benzbromarone/therapeutic use
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Cardiovascular Diseases/epidemiology/prevention & control
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Comorbidity
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Diabetes Mellitus, Type 2/epidemiology/prevention & control
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Enzyme Inhibitors/therapeutic use
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Female
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Gout/*drug therapy/*prevention & control
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Gout Suppressants/*therapeutic use
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Humans
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Hypertension/epidemiology/prevention & control
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Male
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Middle Aged
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Renal Insufficiency, Chronic/epidemiology/prevention & control
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Retrospective Studies
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Thiazoles/therapeutic use
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Uric Acid/*blood/metabolism
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Uricosuric Agents/therapeutic use
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Urolithiasis/epidemiology/prevention & control
2.Early effects of tumor necrosis factor inhibition on bone homeostasis after soluble tumor necrosis factor receptor use.
Mie Jin LIM ; Seong Ryul KWON ; Kowoon JOO ; Min Jung SON ; Shin Goo PARK ; Won PARK
The Korean Journal of Internal Medicine 2014;29(6):807-813
BACKGROUND/AIMS: Our aim was to assess whether short-term treatment with soluble tumor necrosis factor (TNF) receptor affects circulating markers of bone metabolism in rheumatoid arthritis (RA) patients. METHODS: Thirty-three active RA patients, treated with oral disease-modifying antirheumatic drugs (DMARDs) and glucocorticoids for > 6 months, were administered etanercept for 12 weeks. Serum levels of bone metabolism markers were compared among patients treated with DMARDs at baseline and after etanercept treatment, normal controls and naive RA patients not previously treated with DMARDs (both age- and gender-matched). RESULTS: Bone-specific alkaline phosphatase (BSALP) and serum c-telopeptide (CTX)-1 levels were lower in RA patients treated with DMARDs than in DMARD-naive RA patients. After 12 weeks of etanercept treatment, serum CTX-1 and sclerostin levels increased. In patients whose DAS28 improved, the sclerostin level increased from 1.67 +/- 2.12 pg/mL at baseline to 2.51 +/- 3.03 pg/mL, which was statistically significant (p = 0.021). Increases in sclerostin levels after etanercept treatment were positively correlated with those of serum CTX-1 (r = 0.775), as were those of BSALP (r = 0.755). CONCLUSIONS: RA patients treated with DMARDs showed depressed bone metabolism compared to naive RA patients. Increases in serum CTX-1 and sclerostin levels after short-term etanercept treatment suggest reconstitution of bone metabolism homeostasis.
Adult
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Alkaline Phosphatase/blood
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Arthritis, Rheumatoid/blood/diagnosis/*drug therapy
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Biological Markers/blood
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Bone Morphogenetic Proteins/blood
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Bone Remodeling/*drug effects
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Collagen Type I/blood
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Female
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Genetic Markers
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Homeostasis
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Humans
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Immunoglobulin G/*administration & dosage
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Immunosuppressive Agents/*administration & dosage
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Inflammation Mediators/blood
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Male
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Middle Aged
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Peptides/blood
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Receptors, Tumor Necrosis Factor/*administration & dosage
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Time Factors
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Treatment Outcome
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Tumor Necrosis Factor-alpha/antagonists & inhibitors
3.Erratum: Correction of Title.
Kowoon JOO ; Won PARK ; Moon Hyun CHUNG ; Mie Jin LIM ; Kyong Hee JUNG ; Yoonseok HEO ; Seong Ryul KWON
Journal of Korean Medical Science 2013;28(3):493-493
This erratum is being published to correct of title.
4.Serum Procalcitonin for Differentiating Bacterial Infection from Disease Flares in Patients with Autoimmune Diseases.
Kowoon JOO ; Won PARK ; Mie Jin LIM ; Seong Ryul KWON ; Jiyeol YOON
Journal of Korean Medical Science 2011;26(9):1147-1151
Early differentiation between bacterial infections and disease flares in autoimmune disease patients is important due to different treatments. Seventy-nine autoimmune disease patients with symptoms suggestive of infections or disease flares were collected by retrospective chart review. The patients were later classified into two groups, disease flare and infection. C-reactive protein (CRP) and serum procalcitonin (PCT) levels were measured. The CRP and PCT levels were higher in the infection group than the disease flare group (CRP,11.96 mg/dL +/- 9.60 vs 6.42 mg/dL +/- 7.01, P = 0.003; PCT, 2.44 ng/mL +/- 6.55 vs 0.09 ng/mL +/- 0.09, P < 0.001). The area under the ROC curve (AUC; 95% confidence interval) for CRP and PCT was 0.70 (0.58-0.82) and 0.84 (0.75-0.93), which showed a significant difference (P < 0.05). The predicted AUC for the CRP and PCT levels combined was 0.83, which was not significantly different compared to the PCT level alone (P = 0.80). The best cut-off value for CRP was 7.18 mg/dL, with a sensitivity of 71.9% and a specificity of 68.1%. The best cut-off value for PCT was 0.09 ng/mL, with a sensitivity of 81.3% and a specificity of 78.7%. The PCT level had better sensitivity and specificity compared to the CRP level in distinguishing between bacterial infections and disease flares in autoimmune disease patients. The CRP level has no additive value when combined with the PCT level when differentiating bacterial infections from disease flares.
Adult
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Aged
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Area Under Curve
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Autoimmune Diseases/complications/*diagnosis
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Bacterial Infections/complications/*diagnosis
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C-Reactive Protein/analysis
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Calcitonin/*blood
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Female
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Humans
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Male
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Middle Aged
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Odds Ratio
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Protein Precursors/*blood
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ROC Curve
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Retrospective Studies
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Sensitivity and Specificity
5.Erratum: Figure Correction.
Kowoon JOO ; Won PARK ; Mie Jin LIM ; Seong Ryul KWON ; Jiyeol YOON
Journal of Korean Medical Science 2011;26(11):1531-1531
No abstract available.
6.Safety and Efficacy Evaluation for the Addition of Either Etanercept or Leflunomide in Korean Rheumatoid Arthritis Patients Inadequately Responding to Methotrexate.
Kowoon JOO ; Won PARK ; Seong Ryul KWON ; Mie Jin LIM
Journal of Rheumatic Diseases 2013;20(3):166-171
OBJECTIVE: To compare the safety and efficacy associated with the addition of etanercept (ETN) with that of leflunomide (LEF) in Korean rheumatoid arthritis (RA) patients, who inadequately respond to methotrexate (MTX) in a randomized, open-label study. METHODS: Twenty-nine subjects suffering moderate to severe RA, despite MTX treatment were randomly assigned to a combination therapy with either ETN or LEF. The primary end-point was the proportion of subjects achieving American College of Rheumatology (ACR20) criteria at week 16. RESULTS: Ninety percent (n=18) of the ETN+MTX group (n=20) and 22.2% (n=2) of the LEF+MTX group (n=9) achieved an ACR20 response (p=0.001). All patients (n=20) in the ETN+MTX group showed moderate or good EULAR response as compared with 55.6% (n=5) in the LEF+MTX group (p=0.012). All of the ETN+MTX subjects completed the study without adverse events. Adverse events occurred in 77.8% (n=7) of cases in the LEF+MTX group; significantly elevated serum AST/ALT levels in 6 subjects and mild neutropenia (ANC < 1,500/microL) in 1 subject. CONCLUSION: The ETN+MTX combination therapy was effective and safe, whereas the LEF+MTX combination therapy resulted in moderate efficacy in only half of the cases, and was accompanied by a high rate of adverse events. Elevated AST/ALT was the most common adverse event causing dose adjustment or discontinuation of therapeutic agent in the LEF+MTX group.
Arthritis, Rheumatoid
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Humans
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Immunoglobulin G
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Isoxazoles
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Liver Function Tests
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Methotrexate
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Neutropenia
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Receptors, Tumor Necrosis Factor
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Rheumatology
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Stress, Psychological
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Etanercept
7.Digital Thermography of the Fingers and Toes in Raynaud's Phenomenon.
Mie Jin LIM ; Seong Ryul KWON ; Kyong Hee JUNG ; Kowoon JOO ; Shin Goo PARK ; Won PARK
Journal of Korean Medical Science 2014;29(4):502-506
The aim of this study was to determine whether skin temperature measurement by digital thermography on hands and feet is useful for diagnosis of Raynaud's phenomenon (RP). Fifty-seven patients with RP (primary RP, n = 33; secondary RP, n = 24) and 146 healthy volunteers were recruited. After acclimation to room temperature for 30 min, thermal imaging of palmar aspect of hands and dorsal aspect of feet were taken. Temperature differences between palm (center) and the coolest finger and temperature differences between foot dorsum (center) and first toe significantly differed between patients and controls. The area under curve analysis showed that temperature difference of the coolest finger (cutoff value: 2.2degrees C) differentiated RP patients from controls (sensitivity/specificity: 67/60%, respectively). Temperature differences of first toe (cutoff value: 3.11degrees C) also discriminated RP patients (sensitivity/specificity: about 73/66%, respectively). A combination of thermographic assessment of the coolest finger and first toe was highly effective in men (sensitivity/specificity : about 88/60%, respectively) while thermographic assessment of first toe was solely sufficient for women (sensitivity/specificity: about 74/68%, respectively). Thermographic assessment of the coolest finger and first toe is useful for diagnosing RP. In women, thermography of first toe is highly recommended.
Adult
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Diagnosis, Differential
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Female
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Fingers/*physiology
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Humans
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Male
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Middle Aged
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ROC Curve
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Raynaud Disease/*diagnosis
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Sensitivity and Specificity
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Skin Temperature
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*Thermography
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Toes/*physiology
8.Cholestatic Hepatitis Caused by Tongyeong Strain of Orientia tsutsugamushi.
Kowoon JOO ; Mee Kyung KIM ; Se Hee KIL ; Moon Hyun CHUNG ; Joon Mee KIM ; Jae Seung KANG
Infection and Chemotherapy 2009;41(2):99-104
In Korea, the clinical manifestation of scrub typhus in humans appears to be severe in the northern regions of the country and mild in the southern areas. Studies on the geographic distribution of the serotype of Orientia tsutsugamushi revealed that the Boryong serotype is predominant in the southern Korean peninsula, whereas the Gilliam, Karp, and Gilliam-Karp serotypes prevail in the northern or central peninsula. We report a case of severe scrub typhus caused by the Japanese Gilliam type of Orientia tsutsugamushi in a 66-year-old woman from Tongyeong, a city located in the southern part of Korean peninsula. The patient was admitted to the hospital with fever on August 29th, 2001. Scrub typhus complicated by shock, pneumonitis, and encephalitis was diagnosed. Additionally, markedly elevated alkaline phosphatase levels was observed, which necessitated an ultrasonographic examination, which showed an ill-defined hyperechogenic mass on the right hepatic lobe. Liver biopsy showed cholestatic hepatitis and blood culture showed growth of O. tsutsugamushi. Gene sequencing of the amplicons of a polymerase chain reaction using primers for the amplification of the gene encoding the 56-kDa protein of O. tsutsugamushi revealed a nucleotide sequence that matched Yonchon strain of O. tsutsugamushi.
Aged
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Alkaline Phosphatase
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Asian Continental Ancestry Group
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Base Sequence
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Biopsy
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Encephalitis
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Female
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Fever
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Genotype
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Hepatitis
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Humans
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Korea
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Liver
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Orientia tsutsugamushi
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Pneumonia
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Polymerase Chain Reaction
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Scrub Typhus
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Shock
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Sprains and Strains
9.Detection of an Infected N-butyl-2-cyanoacrylate Plug by F-18 FDG PET/CT Scan in a Patient Who Received Endoscopic Intervention for Gastric Variceal Bleeding.
Kowoon JOO ; In Young HYUN ; Ji Hyeon BAEK ; Moon Hyun CHUNG ; Jin Soo LEE
Infection and Chemotherapy 2013;45(2):230-233
Injection of N-butyl-2-cyanoacrylate has been used successfully for treatment of gastric variceal bleeding. Bacteremia after injection of N-butyl-2-cyanoacrylate is well known, however, the method for diagnosis of infected endovascular injected material has remained uncertain. This is the first case reporting use of F-18 FDG PET/CT in detection of the source of infection after control of endoscopic bleeding with N-butyl-2-cyanoacrylate.
Bacteremia
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Enbucrilate
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Hemorrhage
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Humans
10.Cholestatic Hepatitis Caused by Tongyeong Strain of Orientia tsutsugamushi.
Kowoon JOO ; Mee Kyung KIM ; Se Hee KIL ; Moon Hyun CHUNG ; Joon Mee KIM ; Jae Seung KANG
Infection and Chemotherapy 2009;41(2):99-104
In Korea, the clinical manifestation of scrub typhus in humans appears to be severe in the northern regions of the country and mild in the southern areas. Studies on the geographic distribution of the serotype of Orientia tsutsugamushi revealed that the Boryong serotype is predominant in the southern Korean peninsula, whereas the Gilliam, Karp, and Gilliam-Karp serotypes prevail in the northern or central peninsula. We report a case of severe scrub typhus caused by the Japanese Gilliam type of Orientia tsutsugamushi in a 66-year-old woman from Tongyeong, a city located in the southern part of Korean peninsula. The patient was admitted to the hospital with fever on August 29th, 2001. Scrub typhus complicated by shock, pneumonitis, and encephalitis was diagnosed. Additionally, markedly elevated alkaline phosphatase levels was observed, which necessitated an ultrasonographic examination, which showed an ill-defined hyperechogenic mass on the right hepatic lobe. Liver biopsy showed cholestatic hepatitis and blood culture showed growth of O. tsutsugamushi. Gene sequencing of the amplicons of a polymerase chain reaction using primers for the amplification of the gene encoding the 56-kDa protein of O. tsutsugamushi revealed a nucleotide sequence that matched Yonchon strain of O. tsutsugamushi.
Aged
;
Alkaline Phosphatase
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Asian Continental Ancestry Group
;
Base Sequence
;
Biopsy
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Encephalitis
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Female
;
Fever
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Genotype
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Hepatitis
;
Humans
;
Korea
;
Liver
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Orientia tsutsugamushi
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Pneumonia
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Polymerase Chain Reaction
;
Scrub Typhus
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Shock
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Sprains and Strains