title: [Half a century of BCG vaccination. A critical review].
mesh_terms: D000569:Americas; D001500:BCG Vaccine / Q000266:history*; D005060:Europe; D049673:History, 20th Century; D006801:Humans; D014376:Tuberculosis / Q000266:history* / Q000517:prevention & control; D014611:Vaccination / Q000191:economics
chemical_list: D001500:BCG Vaccine
vernacular_title: Medio siglo de vacunación BCG. Una revisión crítica.