title: Comments on the role of epidemiology in the investigation of hepatitis B virus.
mesh_terms: D000328:Adult; D001782:Blood Donors; D006528:Carcinoma, Hepatocellular / Q000453:epidemiology / Q000209:etiology; D002648:Child; D002986:Clinical Trials as Topic; D005260:Female; D006506:Hepatitis A / Q000453:epidemiology; D006509:Hepatitis B / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control; D006514:Hepatitis B Surface Antigens / Q000032:analysis; D017325:Hepatitis B Vaccines; D006513:Hepatitis B e Antigens / Q000032:analysis; D006515:Hepatitis B virus / Q000276:immunology*; D006526:Hepatitis C / Q000453:epidemiology; D003698:Hepatitis Delta Virus / Q000276:immunology; D006801:Humans; D008113:Liver Neoplasms / Q000453:epidemiology / Q000209:etiology; D008297:Male; D008875:Middle Aged; D065227:Transfusion Reaction; D014611:Vaccination; D014761:Viral Hepatitis Vaccines / Q000008:administration & dosage
chemical_list: D006514:Hepatitis B Surface Antigens; D017325:Hepatitis B Vaccines; D006513:Hepatitis B e Antigens; D014761:Viral Hepatitis Vaccines