Central cooperative clinic study of follow-up in tuberculosis control. I. Background, objectives, and methodology.
D000554:Ambulatory Care Facilities; D035843:Biomedical Research; D005500:Follow-Up Studies; D006801:Humans; D014376:Tuberculosis; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis* / Q000453:epidemiology*
TUBERCULOSIS, PULMONARY-STATISTICS AND CONTROL