title: Tuberculin PPD; a single intermediate dosage used in surveying 8,000 persons.
authors.forename: F J
authors.initials: FJ
authors.lastname: MENENDEZ
mesh_terms: D001699:Biometry; D003625:Data Collection; D006801:Humans; D014373:Tuberculin; D014376:Tuberculosis / Q000453:epidemiology* / Q000706:statistics & numerical data*
chemical_list: D014373:Tuberculin