1. Department of Medicine, Duke University Medical Center, Durham, North Carolina
2. Duke University School of Medicine, Durham, North Carolina
3. Center for Inflammatory Bowel Diseases, Division of Digestive and Liver Diseases, NewYork-Presbyterian Hospital/Columbia University Irving Medical Center, New York, New York
4. Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York