title: Letter: BCG vaccination article challenged.
mesh_terms: D000407:Alabama; D001500:BCG Vaccine; D004812:Epidemiologic Methods; D005845:Georgia; D006801:Humans; D011647:Puerto Rico; D014376:Tuberculosis / Q000175:diagnosis / Q000276:immunology / Q000517:prevention & control*; D014481:United States; D014492:United States Public Health Service; D014611:Vaccination / Q000379:methods
chemical_list: D001500:BCG Vaccine