title: B.C.G. vaccination and leukaemia mortality.
mesh_terms: D000293:Adolescent; D000367:Age Factors; D001500:BCG Vaccine; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007938:Leukemia / Q000453:epidemiology / Q000401:mortality*; D011792:Quebec
chemical_list: D001500:BCG Vaccine