1. van Leerdam ME, Vreeburg EM, Rauws EA, et al. Acute upper GI bleeding: did anything change? Time trend analysis of incidence and outcome of acute upper GI bleeding between 1993/1994 and 2000. Am J Gastroenterol. 2003; 98:1494–1499.
2. Hearnshaw SA, Logan RF, Lowe D, Travis SP, Murphy MF, Palmer KR. Acute upper gastrointestinal bleeding in the UK: patient characteristics, diagnoses and outcomes in the 2007 UK audit. Gut. 2011; 60:1327–1335.
Article
3. Sung JJ, Kuipers EJ, El-Serag HB. Systematic review: the global incidence and prevalence of peptic ulcer disease. Aliment Pharmacol Ther. 2009; 29:938–946.
Article
4. Kim JI, Kim SG, Kim N, et al. Korean College of Helicobacter and Upper Gastrointestinal Research. Changing prevalence of upper gastrointestinal disease in 28 893 Koreans from 1995 to 2005. Eur J Gastroenterol Hepatol. 2009; 21:787–793.
5. Theocharis GJ, Thomopoulos KC, Sakellaropoulos G, Katsakoulis E, Nikolopoulou V. Changing trends in the epidemiology and clinical outcome of acute upper gastrointestinal bleeding in a defined geographical area in Greece. J Clin Gastroenterol. 2008; 42:128–133.
Article
6. Hwang JH, Fisher DA, Ben-Menachem T, et al. Standards of Practice Committee of the American Society for Gastrointestinal Endoscopy. The role of endoscopy in the management of acute non-variceal upper GI bleeding. Gastrointest Endosc. 2012; 75:1132–1138.
Article
7. Enestvedt BK, Gralnek IM, Mattek N, Lieberman DA, Eisen G. An evaluation of endoscopic indications and findings related to non-variceal upper-GI hemorrhage in a large multicenter consortium. Gastrointest Endosc. 2008; 67:422–429.
8. Proceedings of the Consensus Conference on Therapeutic Endoscopy in Bleeding Ulcers. March 6–8, 1989. Gastrointest Endosc. 1990; 36(5 Suppl):S1–S65.
9. Laine L, Peterson WL. Bleeding peptic ulcer. N Engl J Med. 1994; 331:717–727.
Article
10. Laine L, Stein C, Sharma V. A prospective outcome study of patients with clot in an ulcer and the effect of irrigation. Gastrointest Endosc. 1996; 43:107–110.
Article
11. Jensen DM, Kovacs TO, Jutabha R, et al. Randomized trial of medical or endoscopic therapy to prevent recurrent ulcer hemorrhage in patients with adherent clots. Gastroenterology. 2002; 123:407–413.
Article
12. Bleau BL, Gostout CJ, Sherman KE, et al. Recurrent bleeding from peptic ulcer associated with adherent clot: a randomized study comparing endoscopic treatment with medical therapy. Gastrointest Endosc. 2002; 56:1–6.
Article
13. Kahi CJ, Jensen DM, Sung JJ, et al. Endoscopic therapy versus medical therapy for bleeding peptic ulcer with adherent clot: a metaanalysis. Gastroenterology. 2005; 129:855–862.
Article
14. Laine L. Systematic review of endoscopic therapy for ulcers with clots: can a metaanalysis be misleading? Gastroenterology. 2005; 129:2127. author reply 2127–8.
Article
15. Laine L, McQuaid KR. Endoscopic therapy for bleeding ulcers: an evidence-based approach based on meta-analyses of randomized controlled trials. Clin Gastroenterol Hepatol. 2009; 7:33–47.
Article
16. Jung HK, Son HY, Jung SA, et al. Comparison of oral omeprazole and endoscopic ethanol injection therapy for prevention of recurrent bleeding from peptic ulcers with nonbleeding visible vessels or fresh adherent clots. Am J Gastroenterol. 2002; 97:1736–1740.
Article
17. Blatchford O, Murray WR, Blatchford M. A risk score to predict need for treatment for upper-gastrointestinal haemorrhage. Lancet. 2000; 356:1318–1321.
Article
18. Vreeburg EM, Terwee CB, Snel P, et al. Validation of the Rockall risk scoring system in upper gastrointestinal bleeding. Gut. 1999; 44:331–335.
Article
19. Park JK, Jung YD, Seo YJ, et al. Risk factors for early rebleeding after initial endoscopic hemostasis in patients with bleeding peptic ulcers. Korean J Gastrointest Endosc. 2000; 21:898–908.
20. Silverstein FE, Gilbert DA, Tedesco FJ, Buenger NK, Persing J. The national ASGE survey on upper gastrointestinal bleeding. II. Clinical prognostic factors. Gastrointest Endosc. 1981; 27:80–93.
21. Rockall TA, Logan RF, Devlin HB, Northfield TC. Risk assessment after acute upper gastrointestinal haemorrhage. Gut. 1996; 38:316–321.
Article
22. Ohmann C, Imhof M, Ruppert C, et al. Time-trends in the epidemiology of peptic ulcer bleeding. Scand J Gastroenterol. 2005; 40:914–920.
Article
23. Gabriel SE, Jaakkimainen L, Bombardier C. Risk for serious gastrointestinal complications related to use of nonsteroidal anti-inflammatory drugs. A metaanalysis. Ann Intern Med. 1991; 115:787–796.