1. Program in Placebo Studies Beth Israel Deaconess Medical Center and Harvard Medical School Boston Massachusetts
2. Division of General Medicine and Primary Care Beth Israel Deaconess Medical Center and Harvard Medical School Boston Massachusetts
3. Department of Medicine Massachusetts General Hospital and Harvard Medical School Boston Massachusetts
4. School of Psychology University of Plymouth Devon UK
5. Department of Psychiatry Massachusetts General Hospital Harvard Medical School Boston Massachusetts
6. Endicott College Beverly Massachusetts
7. Department of Gastroenterology Beth Israel Deaconess Medical Center and Harvard Medical School Boston Massachusetts