Mass surveys and tuberculin testing.
D003625:Data Collection; D006801:Humans; D011859:Radiography; D014373:Tuberculin; D014374:Tuberculin Test; D014376:Tuberculosis; D014397:Tuberculosis, Pulmonary / Q000000981:diagnostic imaging*
D014373:Tuberculin
TUBERCULIN REACTION; TUBERCULOSIS, PULMONARY/radiography