[Tuberculin survey of students of 3 age groups in Montreal].
D000293:Adolescent; D000367:Age Factors; D001500:BCG Vaccine; D002648:Child; D005006:Ethnicity; D006801:Humans; D011792:Quebec; D014374:Tuberculin Test; D014376:Tuberculosis / Q000453:epidemiology / Q000517:prevention & control*
D001500:BCG Vaccine
Enquête tuberculinique chez les écoliers de trois groupes d'âge à Montréal.