References
1. Shen B, Remzi FH, Hammel JP et al. Family history of Crohn´s disease is associated with an increased risk for Crohn´s disease of the pouch. Inflamm Bowel Dis 2009; 15 (2): 163–170. doi: 10.1002/ibd.20646.
2. Miraflor E, ZAghiyan KN, Barmparas G et al. Denovo Crohn´s disease after ileal pouch-anal anastomosis for ulcerative colitis and inflammatory bowel disease-unclassified – long-term follow up of a prospective IBD registry. Washington: DDW 2015: Tu1077.