title: [DRG exercises: perforated duodenal ulcer, peritonitis].
authors.forename: R
authors.initials: R
authors.lastname: Bartkowski
authors.forename: B
authors.initials: B
authors.lastname: Endrich
authors.forename: M
authors.initials: M
authors.lastname: Siess
mesh_terms: D000328:Adult; D000368:Aged; D003365:Costs and Cost Analysis; D003953:Diagnosis-Related Groups / Q000191:economics; D004381:Duodenal Ulcer / Q000145:classification / Q000150:complications*; D006801:Humans; D008297:Male; D010439:Peptic Ulcer Perforation / Q000145:classification / Q000175:diagnosis / Q000191:economics / Q000628:therapy; D010538:Peritonitis / Q000145:classification / Q000175:diagnosis / Q000628:therapy