| 1. | 蕭樹東, 許國銘. 中華胃腸病學[M]. 北京:人民衛生出版社, 2008:363. | 
				                                                        
				                                                            
				                                                                | 2. | Kurata JH, Nogawa AN. Meta-analysis of risk factors for peptic ulcer. Nonsteroidal antiinflammatory drugs, Helicobacter pylori, and smoking[J]. J Clin Gastroenterol, 1997, 24(1):2-17. | 
				                                                        
				                                                            
				                                                                | 3. | Mccoll KE, El-Nujumi AM, Chittajallu RS, et al. A study of the pathogenesis of Helicobacter pylori negative chronic duodenal ulceration[J]. Gut, 1993, 34(6):762-768. | 
				                                                        
				                                                            
				                                                                | 4. | Xia HH, Phung N, Kalantar JS, et al. Demographic and endoscopic characteristics of patients with Helicobacter pylori positive and negative peptic ulcer disease[J]. Med J Aust, 2000, 173(10):515-519. | 
				                                                        
				                                                            
				                                                                | 5. | Kang JM, Kim N, Lee BH, et al. Risk factors for peptic ulcer bleeding in terms of Helicobacter pylori, NSAIDs, and antiplatelet agents[J]. Scand J Gastroenterol, 2011, 46(11):1295-1301. | 
				                                                        
				                                                            
				                                                                | 6. | Chan FK, Ching JY, Suen BY, et al. Effects of Helicobacter pylori infection on long-term risk of peptic ulcer bleeding in low-dose aspirin users[J]. Gastroenterology, 2013, 144(3):528-535. | 
				                                                        
				                                                            
				                                                                | 7. | Chen TS, Chang FY. Clinical characteristics of Helicobacter pylori negative duodenal ulcer disease[J]. Hepatogastroenterology, 2008, 55(86/87):1615-1618. | 
				                                                        
				                                                            
				                                                                | 8. | Debongnie JC, Donnay M, Mairesse J, et al. Gastric ulcers and Helicobacter heilmannii[J]. Eur J Gastroenterol Hepatol, 1998, 10(3):251-254. | 
				                                                        
				                                                            
				                                                                | 9. | Chang CY, Wu MS, Lee CT, et al. Prospective survey for the etiology and outcome of peptic ulcer bleeding:a community based study in southern Taiwan[J]. J Formos Med Assoc, 2011, 110(4):223-229. | 
				                                                        
				                                                            
				                                                                | 10. | 陳灝珠, 林果為. 實用內科學[M]. 13版. 北京:人民衛生出版社, 1983. | 
				                                                        
				                                                            
				                                                                | 11. | 翁志雄, 余志金, 樂勝, 等. 老年人消化性潰瘍并發出血的危險因素分析[J]. 中國現代醫生, 2010, 48(11):127-129. | 
				                                                        
				                                                            
				                                                                | 12. | Xia HH, Phung N, Altiparmak E, et al. Reduction of peptic ulcer disease and Helicobacter pylori infection but increase of reflux esophagitis in Western Sydney between 1990 and 1998[J]. Dig Dis Sci, 2001, 46(12):2716-2723. | 
				                                                        
				                                                            
				                                                                | 13. | Howden CW, Leontiadis GI. Current indications for acid suppressants in Helicobacter pylori-negative ulcer disease[J]. Best Pract Res Clin Gastroenterol, 2001, 15(3):401-412. | 
				                                                        
				                                                            
				                                                                | 14. | Kurata JH, Nogawa AN. Meta-analysis of risk factors for peptic ulcer. Nonsteroidal antiinflammatory drugs, Helicobacter pylori, and smoking[J]. J Clin Gastroenterol, 1997, 24(1):2-17. | 
				                                                        
				                                                            
				                                                                | 15. | 刁萍萍, 杜奕奇, 李兆申, 等. 幽門螺桿菌陰性消化性潰瘍與出血關系的多中心對照研究[J]. 中華消化內鏡雜志, 2010, 27(8):410-414. | 
				                                                        
				                                                            
				                                                                | 16. | Wong GL, Au KW, Lo AO, et al. Gastroprotective therapy does not improve outcomes of patients with Helicobacter pylori-negative idiopathic bleeding ulcers[J]. Clin Gastroenterol Hepatol, 2012, 10(10):1124-1129. |