Hepatitis B: a one-year.
D000328:Adult; D003815:Dentists; D004198:Disease Susceptibility; D005500:Follow-Up Studies; D006509:Hepatitis B / Q000175:diagnosis* / Q000276:immunology; D006511:Hepatitis B Antigens / Q000032:analysis; D006801:Humans; D009784:Occupational Diseases / Q000175:diagnosis* / Q000276:immunology; D012306:Risk
D006511:Hepatitis B Antigens