1. Division of Gastroenterology; Washington University School of Medicine; St. Louis MO USA
2. Department of Psychiatry; Washington University School of Medicine; St. Louis MO USA
3. Gastroenterology Section; John Cochran Veterans Affairs Medical Center; St. Louis MO USA
4. Department of Veterans Affairs; New England Mental Illness Research; Education, and Clinical Center; West Haven CT USA
5. Department of Psychiatry; Yale School of Medicine; New Haven CT USA