1. Yang SK, Hong WS, Min YI, Kim HY, Yoo JY, Rhee PL, et al. Incidence and prevalence of ulcerative colitis in the Songpa-Kangdong District, Seoul, Korea, 1986-1997. J Gastroenterol Hepatol 2000;15:1037–42.
2. Yang SK, Yun S, Kim JH, Park JY, Kim HY, Kim YH, et al. Epidemiology of inflammatory bowel disease in the Songpa-Kangdong district, Seoul, Korea, 1986-2005: a KASID study. Inflamm Bowel Dis 2008;14:542–9.
3. Kim HJ, Hann HJ, Hong SN, Kim KH, Ahn IM, Song JY, et al. Incidence and natural course of inflammatory bowel disease in Korea, 2006-2012: a nationwide population-based study. Inflamm Bowel Dis 2015;21:623–30.
4. Vind I, Riis L, Jess T, Knudsen E, Pedersen N, Elkjaer M, et al. Increasing incidences of inflammatory bowel disease and decreasing surgery rates in Copenhagen City and County, 2003-2005: a population-based study from the Danish Crohn colitis database. Am J Gastroenterol 2006;101:1274–82.
5. Langholz E. Ulcerative colitis. An epidemiological study based on a regional inception cohort, with special reference to disease course and prognosis. Dan Med Bull 1999;46:400–15.
6. Munkholm P. Crohn’s disease--occurrence, course and prognosis. An epidemiologic cohort-study. Dan Med Bull 1997;44:287–302.
8. Ramadas AV, Gunesh S, Thomas GA, Williams GT, Hawthorne AB. Natural history of Crohn’s disease in a population-based cohort from Cardiff (1986-2003): a study of changes in medical treatment and surgical resection rates. Gut 2010;59:1200–6.
12. Larson DW, Davies MM, Dozois EJ, Cima RR, Piotrowicz K, Anderson K, et al. Sexual function, body image, and quality of life after laparoscopic and open ileal pouch-anal anastomosis. Dis Colon Rectum 2008;51:392–6.
13. Wu XJ, He XS, Zhou XY, Zou YF, Lan P. Safety and feasibility of laparoscopic surgery and open surgery in ulcerative colitis: a meta-analysis. Zhonghua Wei Chang Wai Ke Za Zhi 2008;11:408–13.
14. Wu XJ, He XS, Zhou XY, Ke J, Lan P. The role of laparoscopic surgery for ulcerative colitis: systematic review with meta-analysis. Int J Colorectal Dis 2010;25:949–57.
15. Ahmed Ali U, Keus F, Heikens JT, Bemelman WA, Berdah SV, Gooszen HG, et al. Open versus laparoscopic (assisted) ileo pouch anal anastomosis for ulcerative colitis and familial adenomatous polyposis. Cochrane Database Syst Rev 2009;(1): CD006267.
16. Dasari BV, McKay D, Gardiner K. Laparoscopic versus open surgery for small bowel Crohn’s disease. Cochrane Database Syst Rev 2011;(1): CD006956.
18. Eshuis EJ, Slors JF, Stokkers PC, Sprangers MA, Ubbink DT, Cuesta MA, et al. Long-term outcomes following laparoscopically assisted versus open ileocolic resection for Crohn’s disease. Br J Surg 2010;97:563–8.
19. Itzkowitz SH, Harpaz N. Diagnosis and management of dysplasia in patients with inflammatory bowel diseases. Gastroenterology 2004;126:1634–48.
20. Vagefi PA, Longo WE. Colorectal cancer in patients with inflammatory bowel disease. Clin Colorectal Cancer 2005;4:313–9.
21. Carter MJ, Lobo AJ, Travis SP; IBD Section, British Society of Gastroenterology. Guidelines for the management of inflammatory bowel disease in adults. Gut 2004;53 Suppl 5:V1–16.
22. Herszenyi L, Miheller P, Tulassay Z. Carcinogenesis in inflammatory bowel disease. Dig Dis 2007;25:267–9.
23. Canavan C, Abrams KR, Mayberry J. Meta-analysis: colorectal and small bowel cancer risk in patients with Crohn’s disease. Aliment Pharmacol Ther 2006;23:1097–104.
24. Shaukat A, Virnig DJ, Salfiti NI, Howard DH, Sitaraman SV, Liff JM. Is inflammatory bowel disease an important risk factor among older persons with colorectal cancer in the United States? A population-based case-control study. Dig Dis Sci 2011;56:2378–83.
27. Mowat C, Cole A, Windsor A, Ahmad T, Arnott I, Driscoll R, et al. Guidelines for the management of inflammatory bowel disease in adults. Gut 2011;60:571–607.