| 1. | Ledari FM, Barat S, Delavar MA. Chewing gums has stimulatory effects on bowel function in patients undergoing cesarean section: a randomized controlled trial. Bosn J Basic Med Sci, 2012, 12(4): 265-268. | 
				                                                        
				                                                            
				                                                                | 2. | Jang SY, Ju EY, Kim DE, et al. First flatus time and xerostomia associated with gum-chewing after liver resection. J Clin Nurs, 2012, 21(15/16): 2188-2192. | 
				                                                        
				                                                            
				                                                                | 3. | Bhatiyani B, Pandeeswari, Bhasani D, et al. Effect of chewing gum on the postoperative recovery of gastrointestinal function after gynaecological laparoscopic surgery. Int J Reprod Contracept Obstet Gynecol, 2018, 7(2): 644-647. | 
				                                                        
				                                                            
				                                                                | 4. | Gong YH, Zhang QW, Qiao L, et al. Xylitol gum chewing to achieve early postoperative restoration of bowel motility after laparoscopic surgery. Surg Laparosc Endosc Percutan Tech, 2015, 25(4): 303-306. | 
				                                                        
				                                                            
				                                                                | 5. | Husslein H, Franz M, Gutschi M, et al. Postoperative gum chewing after gynecologic laparoscopic surgery. Obstet Gynecol, 2013, 122(1): 85-90. | 
				                                                        
				                                                            
				                                                                | 6. | Frederic S. 現代重癥監護診斷與治療. 4 版. 邱海波, 譯. 北京: 人民衛生出版社, 2003: 79. | 
				                                                        
				                                                            
				                                                                | 7. | Poulton TJ. Gum chewing during pre-anesthetic fasting. Paediatr Anaesth, 2012, 22(3): 288-296. | 
				                                                        
				                                                            
				                                                                | 8. | Berghmans TM, Hulsewe KW, Buurman WA, et al. Stimulation of the autonomic nervous system in colorectal surgery: a study protocol for a randomized controlled trial. Trials, 2012, 13(1): 93. | 
				                                                        
				                                                            
				                                                                | 9. | 楊廣清, 楊小梅, 伍春蘭, 等. 咀嚼口香糖對婦產科微創手術后病人胃腸功能的影響. 護理研究, 2011, 25(2): 311-312. | 
				                                                        
				                                                            
				                                                                | 10. | Scholey A, Haskell C, Robertson B, et al. 咀嚼口香糖可緩解急性心理壓力產生的負性情緒并降低唾液皮質醇水平//第十二屆全國心理學學術大會論文摘要集. 北京: 中國心理學會, 2009: 713. | 
				                                                        
				                                                            
				                                                                | 11. | Parnaby CN, Macdonald AJ, Jenkins JT. Sham feed or sham? A meta-analysis of randomized clinical trials assessing the effect of gum chewing on gut function after elective colorectal surgery. Int J Colorectal Dis, 2009, 24(5): 585-592. | 
				                                                        
				                                                            
				                                                                | 12. | Jernigan AM, Chen CC, Sewell C. A randomized trial of chewing gum to prevent postoperative ileus after laparotomy for benign gynecologic surgery. Int J Gynecol Obstet, 2014, 127(3): 279-282. | 
				                                                        
				                                                            
				                                                                | 13. | Dubin SA, Jense HG, McCranie JM, et al. Sugarless gum chewing before surgery does not increase gastric fluid volume or acidity. Can J Anaesth, 1994, 41(7): 603-606. | 
				                                                        
				                                                            
				                                                                | 14. | Milov DE, Andres JM, Erhart NA, et al. Chewing gum bezoars of the gastrointestinal tract. Pediatrics, 1998, 102(2): e22. | 
				                                                        
				                                                            
				                                                                | 15. | Thompson AG, Razak S, Jayasinghe R. Cardiac arrest and chewing gum-an unfortunate combination. Med J Aust, 2007, 187(11/12): 635. |