Frequency of hepatitis-associated antigen among drug users in the Naval service.
D000328:Adult; D006506:Hepatitis A / Q000209:etiology*; D006511:Hepatitis B Antigens / Q000032:analysis*; D006556:Heroin Dependence / Q000150:complications*; D006801:Humans; D007275:Injections, Intravenous / Q000009:adverse effects; D008297:Male; D009326:Naval Medicine; D014481:United States; D014744:Vietnam
D006511:Hepatitis B Antigens