Displaying publications 1 - 20 of 44 in total

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  1. Wong XZ, Gan CC, Mohamed R, Yahya R, Ganapathy S, Tan SS, et al.
    BMC Nephrol, 2020 11 13;21(1):480.
    PMID: 33187498 DOI: 10.1186/s12882-020-02154-4
    BACKGROUND: Hepatitis C virus (HCV) infects more than 71 million people worldwide and chronic HCV infection increases the risk of liver cirrhosis and failure. Haemodialysis (HD) is one of the renal replacement therapies with risk of HCV transmission. Anti-HCV antibodies are the serological screening test for HCV infection that does not detect active phase of infection. Majority HCV infected HD patients in Malaysia do not have further HCV RNA performed due to high cost and thus HCV treatment is less frequently offered. HCV Core Antigen (HCV Ag) can potentially be used to diagnose active HCV infection in HD population in comparison to HCV RNA, at lower cost.

    METHODS: We conducted a cross-sectional study to assess the correlation between HCV Ag and HCV RNA and to identify the prevalence of active HCV infection among HCV seropositive HD patients from dialysis centres across West Malaysia from July 2019 to May 2020. Pre-dialysis blood was taken and tested for both HCV Ag and HCV RNA tests. HCV Ag was tested with Abbott ARCHITECT HCV Ag test.

    RESULTS: We recruited 112 seropositive HD patients from 17 centres with mean age of 54.04 ± 11.62 years, HD vintage of 14.1 ± 9.7 years, and male constitute 59.8% (67) of the study population. HCV Ag correlates well with HCV RNA (Spearman test coefficient 0.833, p  3000 IU/mL, HCV Ag had a higher sensitivity of 95.1% and greater correlation (Spearman test coefficient 0.897, p chronic active HCV infection among HD cohort, who can then be considered for HCV treatment. For seropositive HD patient with negative HCV Ag, we recommend to follow-up with HCV RNA test.

    Matched MeSH terms: Hepatitis C, Chronic
  2. Wong XZ, Amirah A, Gan CC, Fatiha S, Maznah D, Yahya R, et al.
    Nephrology (Carlton), 2021 May;26(5):463-470.
    PMID: 33580732 DOI: 10.1111/nep.13862
    AIMS: In Malaysia, majority anti-HCV positive haemodialysis patients do not undergo hepatitis C confirmation due to the high cost of HCV RNA. HCV Core Antigen might be a cost-effective diagnostic test to identify HD patients who have active HCV infection eligible for Direct Acting Anti-viral therapy.

    METHODS: A cross-sectional study was conducted to assess the correlation between HCV Ag and HCV RNA and the cost implications of different diagnostic algorithms to diagnose active HCV infection using Anti-HCV, HCV Ag, and HCV RNA. Pre-dialysis blood was tested for both HCV Ag and HCV RNA. HCV Ag was tested with Abbott ARCHITECT HCV Ag test.

    RESULTS: Two-hundred twenty-seven haemodialysis patients were recruited from 20 centres with mean age of 57.68 ± 12.48 years, and male constitutes 56.8% (129) of the study population. HCV Ag correlated well with HCV RNA (Spearman test coefficient 0.943, p 

    Matched MeSH terms: Hepatitis C, Chronic/blood*
  3. Wei L, Lim SG, Xie Q, Văn KN, Piratvisuth T, Huang Y, et al.
    Lancet Gastroenterol Hepatol, 2019 02;4(2):127-134.
    PMID: 30555048 DOI: 10.1016/S2468-1253(18)30343-1
    BACKGROUND: Treatment with combined sofosbuvir and velpatasvir has resulted in high sustained virological response rates in patients chronically infected with hepatitis C virus (HCV) with genotypes 1-6 in clinical trials and real-world settings, but its efficacy and safety has not been assessed in Asia, a region with diverse HCV genotypes.

    METHODS: In this single-arm, open-label, phase 3 trial, we recruited patients from 38 sites across China, Thailand, Vietnam, Singapore, and Malaysia, who were chronically infected with HCV genotypes 1-6, and were HCV treatment-naive or treatment-experienced, either without cirrhosis or with compensated cirrhosis. Patients self-administered a combined sofosbuvir (400 mg) and velpatasvir (100 mg) tablet once daily for 12 weeks. The primary efficacy endpoint was sustained virological response, defined as HCV RNA less than 15 IU/mL at 12 weeks after completion of treatment (SVR12), assessed in all patients who received at least one dose of study drug. The primary safety endpoint was the proportion of adverse events leading to premature discontinuation of study drug. This trial is registered with ClinicalTrials.gov, number NCT02671500, and is completed.

    FINDINGS: Between April 14, 2016, and June 30, 2017, 375 patients were enrolled in the study, of whom 374 completed the full treatment course and one discontinued treatment. Overall, 362 (97% [95% CI 94-98]) of 375 patients achieved SVR12. Among 42 patients with HCV genotype 3b, all of whom had baseline resistance-associated substitutions in NS5A, 25 (89% [95% CI 72-98]) of 28 patients without cirrhosis and seven (50% [23-77]) of 14 patients with cirrhosis achieved SVR12. The most common adverse events were upper respiratory tract infection (36 [10%] patients) and headache (18 [5%] patients). There were no discontinuations due to adverse events. Serious adverse events were reported in three (1%) patients, none of which was judged to be related to sofosbuvir-velpatasvir treatment.

    INTERPRETATION: Consistent with data from other phase 3 studies, single-tablet sofosbuvir-velpatasvir for 12 weeks is an efficacious and safe treatment for Asian patients with chronic HCV infection, but might have lower efficacy in those infected with HCV genotype 3b and with cirrhosis.

    FUNDING: Gilead Sciences.

    Matched MeSH terms: Hepatitis C, Chronic/blood; Hepatitis C, Chronic/complications; Hepatitis C, Chronic/drug therapy*; Hepatitis C, Chronic/virology
  4. Teo SM, Morad Z
    Transplant Proc, 2000 Nov;32(7):1950-1.
    PMID: 11120015
    Matched MeSH terms: Hepatitis C, Chronic/mortality; Hepatitis C, Chronic/epidemiology*
  5. Tan SS, Abu Hassan MR, Abdullah A, Ooi BP, Korompis T, Merican MI
    J Viral Hepat, 2010 Jun;17(6):410-8.
    PMID: 19758272 DOI: 10.1111/j.1365-2893.2009.01191.x
    Chronic hepatitis C is associated with increased morbidity and mortality in persons undergoing haemodialysis. This single-arm, open-label clinical trial investigated the safety and efficacy of an escalating dosage regimen of pegylated interferon (PEG-IFN) alpha-2b in this patient population. Patients with chronic hepatitis C who were undergoing haemodialysis began treatment with PEG-IFN alpha-2b at a dose of 0.5 microg/kg/week, which was increased every 4 weeks to a maximum of 1 microg/kg/week. Treatment duration was 24 weeks for patients with genotype (G) 2 or 3 infection and 48 weeks for patients with G1 infection. The primary end point was sustained virological response (SVR). Of 46 patients screened, 34 (G1: 70.6%; G3: 29.4%) were treated and 23 (67.6%) completed treatment. Overall, 85.3% of patients experienced early virological response, 52.9% experienced end-of-treatment response, and 50% attained SVR, with a trend toward higher SVR rates in G3 compared with G1 patients (80%vs 37.5%; P = 0.06). Anaemia was the main reason for discontinuation of treatment. Patients with chronic hepatitis C who are undergoing haemodialysis can be successfully treated with an escalating dosage regimen of PEG-IFN alpha-2b monotherapy. G3-infected patients can attain high rates of SVR with only 24 weeks of therapy.
    Matched MeSH terms: Hepatitis C, Chronic/drug therapy*
  6. Tan SS, Adlin Nadia Z
    Med J Malaysia, 2017 06;72(3):165-174.
    PMID: 28733564 MyJurnal
    AIM: To describe the clinical characteristic of hepatitis C (HCV) patients and the results of pegylated interferon and ribavirin (PegIFN/RBV) therapy in a routine clinical practice.

    METHODS: A retrospective review of consecutive HCV patients treated with PegIFN/RBV in 2004 to 2012.

    RESULTS: A total of 273 patients received treatment. The mean age was 44.16 ± 10.5 years and 76% were male. The top 2 self-reported risks were blood or blood product transfusion before 1994 and injection drug use, found in 57.1% of patients. The predominant HCV genotype (GT) was 3 at 60.6%, second was GT1 at 36.1% and other GTs were uncommon at about 1% or less. About half of our patients have high baseline viral load (>800,000 iu/ml), 18.3% had liver cirrhosis and 22.3% had HIV co-infection. Co-morbid illness was found in 42.9%, hypertension and type 2 diabetes were the two most common. The overall sustained virological response (SVR) by intention-to-treat analysis were 54.9% (n=150/273), 41.2% (40/97) for GT1, 100% (5/5) for GT2 and 62% (101/163) for GT3. Subgroup analysis for HCV monoinfected, treatment naïve showed SVR of 49.2% (31/63) for GT1, 100% (5/5) for GT2 and 67% (69/103) for GT3. In HCV mono-infected and treatment experienced (n=29), the SVR was 28.6% (4/14) for GT1, 21.4% (69/103) for GT3. In the HIV/HCV co-infected, treatment naïve (n=56), the SVR was 28.6% (4/14) for GT1 and 64.3% (27/42) for GT3. Treatment naïve GT3 mono-infected patients had a statistically significant higher SVR compared to treatment experienced patients (P=0.001). In GT3 patients who achieved rapid virological response, the SVR was significantly higher at 85.2% (P< 0.001). The SVR for cirrhotics were low especially for GT1 at 21% (4/19) and 31% (4/13) based on all patients and treatment naïve HCV monoinfected respectively. In GT3 cirrhotics the corresponding SVR were 57.1% (16/28) and 60.9% (14/23). Premature discontinuation rate was 21.2% with the majority due to intolerable adverse events at 12.1%.

    CONCLUSIONS: In our routine clinical practice, the HCV patients we treated were young, predominantly of GT3 and many had difficult-to-treat clinical characteristics. The SVR of our patients were below those reported in Asian clinical trials but in keeping with some "real world" data.

    Matched MeSH terms: Hepatitis C, Chronic/drug therapy*; Hepatitis C, Chronic/pathology
  7. Suresh RL, Kananathan R, Merican I
    Med J Malaysia, 2001 Jun;56(2):243-7.
    PMID: 11771088
    An analysis of 105 consecutive patients with chronic hepatitis C at the gastroenterology outpatient's clinic in Hospital Kuala Lumpur was performed. The clinical, laboratory and virological data was prospectively recorded in the case notes and comprised of data on patient characteristics, risk factors, clinical features, laboratory features, virology screen and management. Chronic Hepatitis C cases accounted for 2.1% of the total number of cases seen at this clinic during the entire period. There were 78 (74%) males and 27 (26%) females. The ethnic breakdown consisted of Chinese (44.2%), Malays (39.4%), Indians (15.4%) and others (1%). There was higher male preponderance in all the ethnic groups. The main mode of transmission was blood transfusion comprising 51 patients (48.8%). A total of 35.2% of cases underwent treatment, of which a proportion had interferon monotherapy for 6 or 12 months and a subsequent group of naïve patients and non-responders underwent combination therapy with interferon and ribavarin.
    Matched MeSH terms: Hepatitis C, Chronic/epidemiology*; Hepatitis C, Chronic/pathology; Hepatitis C, Chronic/virology
  8. Suresh RL, Suryati Y, Merican I
    Med J Malaysia, 2003 Oct;58(4):594-6.
    PMID: 15190636
    Chronic hepatitis C manifests with many extrahepatic features including renal involvement. However, less commonly, interferon therapy for chronic hepatitis C can also result in renal involvement and we describe a case when interferon therapy resulted in minimal change glomerulopathy, a form of involvement which, carries a good prognosis. Our patient developed nephrotic syndrome while on interferon therapy and HCV RNA levels were undetectable at that time. The disease showed excellent response to steroid therapy.
    Matched MeSH terms: Hepatitis C, Chronic/drug therapy*
  9. Sukeepaisarnjaroen W, Pham T, Tanwandee T, Nazareth S, Galhenage S, Mollison L, et al.
    World J Gastroenterol, 2015 Jul 28;21(28):8660-9.
    PMID: 26229408 DOI: 10.3748/wjg.v21.i28.8660
    To examined the efficacy and safety of treatment with boceprevir, PEGylated-interferon and ribavirin (PR) in hepatitis C virus genotype 1 (HCVGT1) PR treatment-failures in Asia.
    Matched MeSH terms: Hepatitis C, Chronic/complications; Hepatitis C, Chronic/diagnosis; Hepatitis C, Chronic/drug therapy*; Hepatitis C, Chronic/ethnology
  10. Seow EL, Robert Ding PH
    Med J Malaysia, 2005 Dec;60(5):637-41.
    PMID: 16515116
    This was an open-label, uncontrolled study with the aim of assessing the efficacy and safety of pegylated interferon alfa-2b plus ribavirin in the treatment of chronic hepatitis C. The study was conducted in Island Hospital, Penang beween January 2002 and December 2003. Thirty-three patients were enrolled in this study with ten defaulters. The overall sustained virological response (SVR) (Intention-To-Treat analysis) in naïve patients was 39.10%. However, when the study was adjusted to only include those who completed treatment and follow-up, overall SVR as 52.9%. Side-effects were tolerable in most patients with anaemia occurring in 22 patients (66.7%), leukopenia 23 patients (69.7%) and thrombocytopenia in 15 patients (45.5%). This study showed that pegylated interferon alfa-2b 1.5 mcg/kg/week plus ribavirin > 10.6 mg/kg/day is efficacious and safe to be used in the treatment of: chronic hepatitis C.
    Matched MeSH terms: Hepatitis C, Chronic/drug therapy*
  11. Sachithanandan S, Fielding JF
    Med J Malaysia, 1999 Mar;54(1):110-3.
    PMID: 10972013
    The aim of this study was to determine if knowledge of both the serum HCV RNA and serum anti core IgM antibody status enabled one to predict the histological severity in chronic hepatitis C. We studied 45 female patients with chronic hepatitis C infection. The presence or absence of IgM antibodies to HCV and HCV RNA by PCR in each patient's serum was determined. Liver biopsies performed were scored according to a modified Desmet's histological activity index. Negative HCV RNA patients had least histological change. HCV RNA positive patients who were also IgM antibody positive had lower scores than their IgM negative counterparts. The grade of histological severity is more accurately predictable from knowledge of both the HCV RNA and IgM anti HCV status of the patient.
    Matched MeSH terms: Hepatitis C, Chronic/pathology*
  12. Rafique G, Bukhsh A, Gul A, Khiljee S, Ashraf M, Omer MO
    Pak J Pharm Sci, 2017 Jan;30(1):11-16.
    PMID: 28603106
    180 million people are affected by chronic Hepatitis C Virus infection globally and more than 50 million in South East Asia. Combination of Interferon and Ribavirin is the current anti-HCV therapy in practice and is associated with certain hematologic adverse effects. In this concurrent observational study the incidence rate of major hematologic adverse effects and efficacy outcomes of Interferon and Ribavirin combination therapy was evaluated in 288 chronic hepatitis C patients at Lahore General Hospital. Levels of Hb, TLC, and Platelets counts were monitored for hematologic adverse effects monitoring, whereas, ALT, AST and bilirubin levels were monitored for efficacy. PCR was done at week 4, 12 &36 for therapeutic success evaluation. A significant reduction in Hb levels (p<0.05) was observed after week 4, 8 and 12 of therapy. Frequency of anemia increased in both genders with body weight <65kg and platelet count <150,000/mm(3). End Treatment Response (ETR) was achieved in 64.5%. Anemia was the major side effect of the combination therapy particularly in the males. Higher ETR was observed in patients who achieved RVR and were <50 years of age.
    Matched MeSH terms: Hepatitis C, Chronic/blood; Hepatitis C, Chronic/diagnosis; Hepatitis C, Chronic/drug therapy*; Hepatitis C, Chronic/epidemiology
  13. Qua CS, Goh KL
    J Gastroenterol Hepatol, 2011 Aug;26(8):1333-7.
    PMID: 21443669 DOI: 10.1111/j.1440-1746.2011.06732.x
    To determine the etiology of liver cirrhosis and risk factors for hepatocellular carcinoma (HCC) in a multiracial Asian population.
    Matched MeSH terms: Hepatitis C, Chronic/ethnology
  14. Poynard T
    Med J Malaysia, 2005 Jul;60 Suppl B:70-1.
    PMID: 16108178
    Matched MeSH terms: Hepatitis C, Chronic/diagnosis; Hepatitis C, Chronic/drug therapy*; Hepatitis C, Chronic/epidemiology
  15. Poynard T
    Med J Malaysia, 2005 Jul;60 Suppl B:77-9.
    PMID: 16108180
    Matched MeSH terms: Hepatitis C, Chronic/drug therapy*; Hepatitis C, Chronic/physiopathology
  16. Poddar, Sandeep
    MyJurnal
    Hepatitis C is a liver disease caused by the hepatitis C virus: the virus can cause both acute and chronic hepatitis infection. Patients with chronic hepatitis C virus (HCV) infection appear to have an excellent chance of responding to 6 months of standard therapy with interferon (IFN) and frequently develop systemic iron overload, which exacerbates morbidity. The iron excess in hepatitis C may be due to hereditary hemochromatosis, hematologic diseases, multiple transfusions, porphyria cutanea tarda and chronic alcohol abuse. Different mechanisms proposed to explain the relation between HCV infection and hepatic iron overload. Some revealed that hepatic iron accumulation results from release of iron from damaged liver cells. Consumption of coffee, tea also reduces iron absorption and thereby decrease iron overload in Liver and thereby reduces the oxidative stress of iron overload in liver. The global scenario of this problem has been discussed in the article.
    Matched MeSH terms: Hepatitis C, Chronic
  17. Noor Annisa Darman, Muhammad Adib Abd Wahab, Wan Nur Illyana Wan Yusoff, Sasikala Siva, Xiao Hui Sem, Jessica Markby
    MyJurnal
    Introduction:Despite significant advancements in testing technologies and treatment, 80% of 80 million chronically hepatitis C virus (HCV) infected people remain undiagnosed. FIND in collaboration with Ministries of Health and local partners, initiated seven Unitaid funded Hepatitis C Elimination through Access to Diagnostics (HEAD-Start) projects in four countries (Georgia, India, Malaysia and Myanmar) to demonstrate innovative models of HCV care to inform programme scale-up nationally and globally. Here, we describe preliminary findings for patient retention in the HCV cascade for each project. Methods: Target populations and settings include people who inject drugs (PWID) in harm reduction sites (Manipur, Georgia, Myanmar), high risk patients in primary health care facilities (Malaysia), general population in polyclinics and district hospitals (Delhi) and people living with HIV (PLHIV) in antiretroviral therapy (ART) clinics (Punjab). All projects employ rapid diagnostic tests for HCV screening. HCV seropositive patients received confirmatory testing either on site (Georgia, Myanmar) or via centralized laboratory (Malaysia, Georgia, Delhi) or testing hubs (Punjab, Manipur). Results: In Malaysia, 4,613 patients were screened - 23% (1,042) are HCV seropositive, 57% (594) received RNA confirmatory testing and 11% (54) confirmed RNA-positive initiated treatment. In Delhi, 17,101 patients were screened – 2% (355) are seropositive, 92% (326) received confirmatory testing and 70% (180) initiated treatment. In Punjab, 17,507 patients were screened – 19% (3,368) are seroposi-tive, 94% (3,165) received confirmatory testing and 31% (828) initiated treatment. In Manipur, 3,845 patients were screened - 56% (2,180) are seropositive, 73% (1,591) received confirmatory testing and 67% (823) initiated treat-ment. In Myanmar, 199 patients were screened – 96% (191) are seropositive, 100% received confirmatory testing and 86% (151) initiated treatment. In Georgia (Arm 1) - 100% (619) received confirmatory testing and 76% (389) initiated treatment. Conclusion: The fully decentralised HCV testing model demonstrated higher numbers of patients progressing to each step in the care cascade.
    Matched MeSH terms: Hepatitis C, Chronic
  18. Naing C, Sitt T, Aung AT, Aung K
    Medicine (Baltimore), 2015 Jul;94(30):e1234.
    PMID: 26222859 DOI: 10.1097/MD.0000000000001234
    In Myanmar, hepatitis C virus (HCV) infection prevalence is 2%. A combination therapy of pegylated interferon alfa-2a and ribavirin (PEG-IFNa/RBV) is a standard treatment, but the effect of this antiviral therapy needs evaluation as to determine the efficacy and safety of dual PEG-IFNa/RBV therapy in treating patients infected with HCV in Myanmar.This was a retrospective analysis of data from a single clinic exclusively for gastrointestinal diseases in Yangon, Myanmar. We assessed treatment responses at the defined time points and stratified by genotypes of HCV. We also determined incidences of adverse events (AEs). We investigated independent predictors of sustained virologic response (SVR) in the participants.A total of 362 HCV-infected cases were included in this study. The majority were females (51.7%) with mean age of 47.12 years (±11.6) and noncirrhosis patients (82%). Rapid virologic response (RVR), early virologic response (EVR), end of treatment response (ETR), and SVR 24 weeks after completion of the dual treatment were 50.3% (178/362), 88% (314/357), 80.1% (286/357), and 85.6% (167/195), respectively. The most frequently reported AEs were nausea/anorexia (72.8%) and flu-like symptoms (62.4%). In multivariate analysis, 4 factors were independently associated with SVR; SVR to genotype 3 (odds ratio [OR] 2.4, 95% CI: 1.24-4.62), EVR (OR 0.54, 95% CI: 0.3-0.95), and duration of treatment (OR 1.52, 95% CI: 1.18-1.98). Study limitations were acknowledged.The efficacy and safety of the dual therapy in treating HCV-infected patient in Myanmar was acceptable. We recommend a prospective randomized control trial looking at duration of therapy and rates of achieving SVR, which could significantly impact the care of HCV-infected patients in Myanmar and perhaps other countries as well.
    Matched MeSH terms: Hepatitis C, Chronic/drug therapy*; Hepatitis C, Chronic/virology
  19. Morgan Freiman J, Wang J, Easterbrook PJ, Robert Horsburgh C, Marinucci F, White LF, et al.
    J Hepatol, 2019 Feb 20.
    PMID: 30797050 DOI: 10.1016/j.jhep.2019.02.011
    BACKGROUND & AIMS: Affordable point-of-care (POC) tests for hepatitis C (HCV) viraemia are needed to improve access to treatment in low and middle income countries (LMICs). Our aims were to determine the target limit of detection (LOD) necessary to diagnose the majority of persons with HCV eligible for treatment, and identify characteristics associated with low-level viraemia (LLV) (defined as the lowest 3% of the distribution of HCV RNA) to understand those at risk of being mis-diagnosed.

    METHODS: We established a multi-country cross-sectional dataset of first available quantitative HCV RNA linked to demographic and clinical data. We excluded individuals on HCV treatment. We analyzed the distribution of HCV RNA and determined critical thresholds for detection of HCV viraemia. We then performed logistic regression to evaluate factors associated with LLV, and derived relative sensitivities for significant covariates.

    RESULTS: The dataset included 66,640 individuals with HCV viraemia from Georgia (44.4%), Canada (40.9%), India (8.1%), Cambodia (2.6%), Egypt (1.6%), Pakistan (1.3%), Cameroon (0.4%), Indonesia (0.2%), Thailand (0.2%), Vietnam (0.1%), Malaysia (0.05%), and Mozambique (0.02%). The 97% LOD was 1,318 IU/mL (95% CI 1298.4, 1322.3). Factors associated with LLV were younger age 18-30 vs. 51-64 years (OR 2.56 95% CI 2.19, 2.99), female vs. male sex (OR 1.32, 95% CI 1.18, 1.49), and advanced fibrosis stage F4 vs. F0-1 (OR 1.44, 95%CI 1.21, 1.69). Only the younger age group had a decreased relative sensitivity below 95% at 93.3%.

    CONCLUSIONS: In this global dataset, a test with an LOD of 1,318 IU/mL would identify 97% of viraemic HCV infections among almost all populations. This LOD will help guide manufacturers in the development of affordable POC diagnostics to expand HCV testing and linkage to care in LMICs.

    LAY SUMMARY: We created and analyzed a dataset from 12 countries with 66,640 participants with chronic hepatitis C virus infection. We determined that about 97% of those with viraemic infection had 1300 International Units/mL or more of circulating virus at the time of diagnosis. While current diagnostic tests can detect as little as 12 International Units/mL of virus, our findings suggest that increasing the level of detection closer to 1300 would maintain good test accuracy and will likely allow for more affordable portable tests to be developed for use in low and middle income countries.

    Matched MeSH terms: Hepatitis C, Chronic
  20. Morad Z
    Med J Malaysia, 2012 Apr;67(2):145-6.
    PMID: 22822631
    Matched MeSH terms: Hepatitis C, Chronic/virology*
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