CASE-FINDING BY SERIAL TUBERCULIN-TESTING OF SCHOOLCHILDREN.
D002648:Child; D006801:Humans; D008403:Mass Screening; D012572:School Health Services; D014373:Tuberculin; D014374:Tuberculin Test; D014852:Wales
D014373:Tuberculin
CHILD; MASS SCREENING; SCHOOL HEALTH; TUBERCULIN TEST; WALES