Ulcerative colitis and Crohn's disease are the most common types of . Ulcerative colitis affects only the colon and rectum. Crohn's can affect any part of the digestive tract. To learn more about Crohn's disease, see the topic Crohn's Disease.......Learn More......http://www.healthlibrary.com/ulcerative_colitis.htm.
Does IVF cause premature births ?
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