To learn more about these topics, visit: 

Midwest Gastroenterology Center http://www.midwestgastro.com

Midwest GAmerican College of Gastroenterology (ACG) http://www.acg.gi.org

American Gastroenterological Association (AGA) http://www.gastro.org/wmspage.cfm?parm1=2

American Gastroenterological Association http://www.cancer.gov/cancerinfo/wyntk/colon-and-rectum

American Society of Colon and Rectal Surgeons http://www.fascrs.org

American Liver Foundation http://www.liverfoundation.org

Crohn's & Colitis Foundation of America Inc. http://www.ccfa.org

Hepatitis Foundation International (HFI)  http://www.hepfi.org

Internal Foundation for Functional Gastrointestinal Disorders http://www.iffgd.org

Mayo Clinic www.MayoClinic.com 

National Organization for Rare Disorders Inc. (NORD) http://www.rarediseases.org

U.S. Department of Health and Human Services http://www.os.dhhs.gov

Web MD www.WebMD.com