title: When is referral of Heaf test positive schoolchildren worth while? More data are needed.
authors.forename: D
authors.initials: D
authors.lastname: Elliman
mesh_terms: D000293:Adolescent; D001500:BCG Vaccine; D002648:Child; D002675:Child, Preschool; D006801:Humans; D012017:Referral and Consultation; D014374:Tuberculin Test; D014376:Tuberculosis / Q000517:prevention & control*
chemical_list: D001500:BCG Vaccine