[Tuberculin indices and tubercular morbidity in the student population of the province of Milan].
GIOBBI
A
A
D006801:Humans; D009017:Morbidity; D013334:Students; D014373:Tuberculin; D014374:Tuberculin Test / Q000706:statistics & numerical data*; D014376:Tuberculosis / Q000453:epidemiology*
D014373:Tuberculin
TUBERCULIN REACTION/statistics; TUBERCULOSIS/epidemiology