title: [Peptic ulcer in Puerto Rico 1939].
authors.forename: F
authors.initials: F
authors.lastname: Hernández-Morales
mesh_terms: D049673:History, 20th Century; D006801:Humans; D010437:Peptic Ulcer / Q000175:diagnosis / Q000266:history / Q000628:therapy; D011647:Puerto Rico
vernacular_title: Ulcera péptica in Puerto Rico 1939.