title: [Tuberculosis infection among medical students at the preclinical level].
mesh_terms: D001500:BCG Vaccine; D002140:California; D006801:Humans; D011647:Puerto Rico; D013337:Students, Medical; D014374:Tuberculin Test; D014397:Tuberculosis, Pulmonary / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control
chemical_list: D001500:BCG Vaccine
vernacular_title: Infección por tuberculósis en los estudiantes de medicina del nivel preclínico.