Hepatitis B--problems and progress.
D003726:Dental Assistants; D003815:Dentists; D006509:Hepatitis B / Q000097:blood / Q000276:immunology / Q000517:prevention & control* / Q000635:transmission; D006515:Hepatitis B virus / Q000276:immunology; D006801:Humans; D009784:Occupational Diseases / Q000517:prevention & control* / Q000635:transmission; D012306:Risk; D014765:Viral Vaccines / Q000627:therapeutic use
D014765:Viral Vaccines