1. Yang SK, Yun S, Kim JH, et al. Epidemiology of inflammatory bowel disease in the Songpa-Kangdong district, Seoul, Korea, 1986-2005: a KASID study. Inflamm Bowel Dis. 2008; 14:542–549. PMID:
17941073.
Article
2. Thia KT, Loftus EV Jr, Sandborn WJ, Yang SK. An update on the epidemiology of inflammatory bowel disease in Asia. Am J Gastroenterol. 2008; 103:3167–3182. PMID:
19086963.
Article
3. Park SJ, Kim WH, Cheon JH. Clinical characteristics and treatment of inflammatory bowel disease: a comparison of Eastern and Western perspectives. World J Gastroenterol. 2014; 20:11525–11537. PMID:
25206259.
Article
4. Woodward B. Challenges to human subject protections in US medical research. JAMA. 1999; 282:1947–1952. PMID:
10580461.
Article
5. World Medical Association Inc. Declaration of Helsinki. Ethical principles for medical research involving human subjects. J Indian Med Assoc. 2009; 107:403–405. PMID:
19886379.
6. Griggs RC, Batshaw M, Dunkle M, et al. Clinical research for rare disease: opportunities, challenges, and solutions. Mol Genet Metab. 2009; 96:20–26. PMID:
19013090.
Article
7. Cheon JH, Kim YS, Ye BD, et al. Crohn's Disease Clinical Network and Cohort (CONNECT) study: the first step toward nationwide multicenter research of Crohn's disease in Korea. Intest Res. 2014; 12:173–175. PMID:
25349589.
Article
8. Barber B, Lally JJ, Makarushka JL, Sullivan D. Research on human subjects: problems of social control in medical experimentation. New York: Russell Sage Foundation;1973.
9. Bartlett EE. International analysis of institutional review boards registered with the U.S. Office for human research protection. J Empir Res Hum Res Ethics. 2008; 3:49–56. PMID:
19385756.
Article
10. Bell J, Whiton J, Connelly S. [Report]. Evaluation of NIH implementation of Section 491 of the Public Health Service Act, mandating a program of protection for research subjects (USA). Washington, D.C.: U.S. Department of Health and Human Services;1998.
11. Catania JA, Lo B, Wolf LE, et al. Survey of U.S. human research protection organizations: workload and membership. J Empir Res Hum Res Ethics. 2008; 3:57–69. PMID:
19122821.
Article
12. Sansone RA, McDonald S, Hanley P, Sellbom M, Gaither GA. The stipulations of one institutional review board: a five year review. J Med Ethics. 2004; 30:308–310. PMID:
15173369.
Article
13. Shah S, Whittle A, Wilfond B, Gensler G, Wendler D. How do institutional review boards apply the federal risk and benefit standards for pediatric research? JAMA. 2004; 291:476–482. PMID:
14747505.
Article
14. McWilliams R, Hoover-Fong J, Hamosh A, Beck S, Beaty T, Cutting G. Problematic variation in local institutional review of a multicenter genetic epidemiology study. JAMA. 2003; 290:360–366. PMID:
12865377.
Article
15. Burman W, Breese P, Weis S, Bock N, Bernardo J, Vernon A. Tuberculosis Trials Consortium. The effects of local review on informed consent documents from a multicenter clinical trials consortium. Control Clin Trials. 2003; 24:245–255. PMID:
12757991.
Article
16. Lidz CW, Appelbaum PS, Arnold R, et al. How closely do institutional review boards follow the common rule? Acad Med. 2012; 87:969–974. PMID:
22622205.
Article
17. Altman DG. Practical statistics for medical research. London: Chapman & Hall;1991.
18. Bosani M, Ardizzone S, Porro GB. Biologic targeting in the treatment of inflammatory bowel diseases. Biologics. 2009; 3:77–97. PMID:
19707398.
19. Kuhbacher T, Folsch UR. Practical guidelines for the treatment of inflammatory bowel disease. World J Gastroenterol. 2007; 13:1149–1155. PMID:
17451192.
Article
20. Jeon HH, Lee HJ, Jang HW, et al. Clinical outcomes and predictive factors in oral corticosteroid-refractory active ulcerative colitis. World J Gastroenterol. 2013; 19:265–273. PMID:
23345950.
Article
21. Johnston RD, Logan RF. What is the peak age for onset of IBD? Inflamm Bowel Dis. 2008; 14(Suppl 2):S4–S5. PMID:
18816745.
Article