Skin sensitivity to Gause and avian tuberculins among Canadian students.
D000293:Adolescent; D002170:Canada; D005060:Europe; D006801:Humans; D009164:Mycobacterium Infections / Q000453:epidemiology*; D014373:Tuberculin; D014374:Tuberculin Test / Q000592:standards*; D014481:United States
D014373:Tuberculin