title: [Epidemiological characteristics of peptic ulcer in workers of Chuquicamata].
mesh_terms: D000328:Adult; D000368:Aged; D002677:Chile; D003300:Copper; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008906:Mining; D009784:Occupational Diseases / Q000453:epidemiology*; D010437:Peptic Ulcer / Q000453:epidemiology*
chemical_list: D003300:Copper
vernacular_title: Características epidemiológicas de la úlcera péptica en trabajadores de Chuquicamata.