Acute viral hepatitis in Singapore.
D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006506:Hepatitis A / Q000453:epidemiology; D006509:Hepatitis B / Q000453:epidemiology; D006526:Hepatitis C / Q000453:epidemiology; D006525:Hepatitis, Viral, Human / Q000453:epidemiology*; D006801:Humans; D008297:Male; D012846:Singapore