title: Results of contact examination in Rotterdam, 1967-1969.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004812:Epidemiologic Methods; D006801:Humans; D007223:Infant; D008875:Middle Aged; D009426:Netherlands; D014397:Tuberculosis, Pulmonary / Q000453:epidemiology / Q000635:transmission*