title: [Abel Ayerza (1861-1918) and the cardiac Negroes].
mesh_terms: D001741:Black or African American; D006331:Heart Diseases / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans
vernacular_title: Abel Ayerza (1861-1918) y los cardíacos negros.