Viral hepatitis: recent studies of etiology.
D006506:Hepatitis A / Q000175:diagnosis / Q000209:etiology*; D006507:Hepatovirus / Q000254:growth & development; D006801:Humans; D012698:Serologic Tests; D014776:Virus Cultivation; D014777:Virus Diseases / Q000175:diagnosis / Q000209:etiology*