1. Ulcerative colitis and pregnancy;Willoughby, C.P.; Truelove, S.C.;Gut,1980
2. Pregnancy in idiopathic ulcerative colitis;Abramson, D.; Jankelson, I.R.; Milner, L.R.;Am J Obstet Gynecol,1951
3. De Dombal FT, Burton IL, Goligher JC. Crohn's disease and pregnancy. Br Med J 1972; 3: 550-3.
4. Infertility in women;Harrison, R.F.;Br J Hosp Med,1977
5. Regional enteritis complicating pregnancy;Crohn, B.B.; Yarnis, H.; Korelitz, B.I.;Gastroenterology,1956