title: Viral hepatitis: overview and historical perspectives.
mesh_terms: D005602:France; D005858:Germany; D006506:Hepatitis A / Q000453:epidemiology / Q000266:history*; D006509:Hepatitis B / Q000453:epidemiology / Q000266:history; D049670:History, 17th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007564:Japan; D014481:United States; D014765:Viral Vaccines / Q000266:history
chemical_list: D014765:Viral Vaccines