title: [Recurrent perforated gastroduodenal ulcers and their operative treatment].
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D000368:Aged; D002031:Bulgaria; D004381:Duodenal Ulcer / Q000150:complications*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000601:surgery*; D012008:Recurrence; D013276:Stomach Ulcer / Q000150:complications*
vernacular_title: Povtorno perforirali gastro-duodenalni iazvi i tiakhnoto operativno lechenie