1 Bachev II, "Risk factors of complications of peptic ulcer by acute hemorrhage and perforation" 146 : 20-24, 1991
2 Møller MH, "Risk factors in patients surgically treated for peptic ulcer perforation" 44 : 145-152, 2009
3 Abu-Dallo KI, "Retroperitoneal perforation of duodenal ulcer with abscess formation" 88 : 14-15, 1975
4 Camilleri L, "Retroperitoneal perforation of duodenal ulcer responsible for abscess" 43 : 388-390, 1989
5 Edmondson HT, "Retroperitoneal abscess from posterior perforation of duodenal ulcer" 61 : 374-375, 1972
6 Walgenbach S, "Perforation of gastroduodenal ulcer: a risk analysis" 87 : 403-407, 1992
7 Arici C, "Peptic ulcer perforation: an analysis of risk factors" 8 : 142-146, 2002
8 Ramakrishnan K, "Peptic ulcer disease" 76 : 1005-1012, 2007
9 Kurata JH, "Meta-analysis of risk factors for peptic ulcer: nonsteroidal antiinflammatory drugs, Helicobacter pylori, and smoking" 24 : 2-17, 1997
10 Behrman SW, "Management of complicated peptic ulcer disease" 140 : 201-208, 2005
1 Bachev II, "Risk factors of complications of peptic ulcer by acute hemorrhage and perforation" 146 : 20-24, 1991
2 Møller MH, "Risk factors in patients surgically treated for peptic ulcer perforation" 44 : 145-152, 2009
3 Abu-Dallo KI, "Retroperitoneal perforation of duodenal ulcer with abscess formation" 88 : 14-15, 1975
4 Camilleri L, "Retroperitoneal perforation of duodenal ulcer responsible for abscess" 43 : 388-390, 1989
5 Edmondson HT, "Retroperitoneal abscess from posterior perforation of duodenal ulcer" 61 : 374-375, 1972
6 Walgenbach S, "Perforation of gastroduodenal ulcer: a risk analysis" 87 : 403-407, 1992
7 Arici C, "Peptic ulcer perforation: an analysis of risk factors" 8 : 142-146, 2002
8 Ramakrishnan K, "Peptic ulcer disease" 76 : 1005-1012, 2007
9 Kurata JH, "Meta-analysis of risk factors for peptic ulcer: nonsteroidal antiinflammatory drugs, Helicobacter pylori, and smoking" 24 : 2-17, 1997
10 Behrman SW, "Management of complicated peptic ulcer disease" 140 : 201-208, 2005
11 Zipfel L, "Life-endangering infantile duodenal ulcer hemorrhage in mediastinal abscess following covered hypopharyngeal perforation" 70 : 903-905, 1976
12 Catalano D, "Left side abdominal abscess from a retroperitoneal perforation of a duodenal ulcer" 141 : 111-113, 1984
13 Bukurov S, "Latent abscess in bursa omentalis after a hidden perforation of peptic ulcer of the stomach" 83 : 1347-1350, 1955
14 Ng EK, "Eradication of Helicobacter pylori prevents recurrence of ulcer after simple closure of duodenal ulcer perforation: randomized controlled trial" 231 : 153-158, 2000
15 Martinez JP, "Abdominal pain in the elderly" 24 : 371-388, 2006
16 O'Neal JF, "A spontaneous esophageal perforation and duodenal ulcer perforation resulting in a subpulmonic abscess" 90 : 475-476, 1994