1. UCLA School of Medicine, Los Angeles, California
2. Department of Gastroenterology, Tufts University School of Medicine, Boston, Massachusetts
3. Harvard Medical School, Boston, Massachusetts
4. Department of Gastroenterology, Brigham and Women’s Hospital, Boston, Massachusetts
5. Department of Obstetrics and Gynecology, Massachusetts General Hospital, Boston
6. Department of Dermatology, Brigham and Women’s Hospital, Boston, Massachusetts