University of Pennsylvania, Philadelphia, PA
Temple University Health Sciences Center, Philadelphia, PA
Mayo Graduate School of Medicine, Mayo Clinic, Rochester, MN
American Board of Internal Medicine - Internal Medicine
American Board of Internal Medicine - Gastroenterology
Professor of Medicine
Inflammatory bowel disease (Crohn's disease and ulcerative colitis): epidemiology, natural history diagnosis, and medical therapy
See a listing of publications on PubMed, a service of the National Library of medicine.
See a description of research activities.

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