title: Peptic ulcer in Puerto Rico.
authors.forename: F G
authors.initials: FG
authors.lastname: Irwin
authors.forename: A M
authors.initials: AM
authors.lastname: Casals
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000175:diagnosis / Q000209:etiology / Q000601:surgery / Q000628:therapy; D011647:Puerto Rico