title: Hepatitis B immunization 1983 to 1984.
mesh_terms: D006509:Hepatitis B / Q000517:prevention & control*; D017325:Hepatitis B Vaccines; D006801:Humans; D010564:Personnel, Hospital; D014765:Viral Vaccines / Q000627:therapeutic use*
chemical_list: D017325:Hepatitis B Vaccines; D014765:Viral Vaccines