title: [A study of improving BCG vaccine for the scarification method. An observation on school children].
mesh_terms: D001500:BCG Vaccine / Q000706:statistics & numerical data*; D002648:Child; D006801:Humans; D009163:Mycobacterium bovis; D014611:Vaccination
chemical_list: D001500:BCG Vaccine
keywords: BCG VACCINATION/statistics