Tuberculin conversion in junior and senior medical students at the University of Iowa.
D001500:BCG Vaccine; D006801:Humans; D007484:Iowa; D007538:Isoniazid / Q000627:therapeutic use; D011859:Radiography; D013337:Students, Medical; D011795:Surveys and Questionnaires; D013997:Time Factors; D014374:Tuberculin Test; D014376:Tuberculosis / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000188:drug therapy
D001500:BCG Vaccine; D007538:Isoniazid