Frequency of tuberculous infection among school children in Praesto County, with an addendum on the tuberculin testing method.
D002648:Child; D006801:Humans; D012572:School Health Services; D014373:Tuberculin; D014374:Tuberculin Test; D014376:Tuberculosis; D014397:Tuberculosis, Pulmonary
D014373:Tuberculin
SCHOOL HEALTH; TUBERCULIN REACTION; TUBERCULOSIS IN CHILDHOOD; TUBERCULOSIS, PULMONARY