1. Department of Anesthesiology, Critical Care and Pain Medicine Beth Israel Deaconess Medical Center Harvard Medical School Boston Massachusetts U.S.A.
2. Department of Psychiatry Rutgers New Jersey Medical School Newark New Jersey U.S.A.
3. Valley Anesthesiology and Pain Consultants University of Arizona College of Medicine‐Phoenix Phoenix Arizona U.S.A.
4. Creighton University School of Medicine Omaha Nebraska U.S.A.
5. Department of Anesthesiology Mt. Sinai Medical Center of Florida Miami Beach Florida U.S.A.
6. Departments of Anesthesiology and Critical Care Medicine Johns Hopkins School of Medicine Baltimore Maryland U.S.A.
7. Pain Division Department of Anesthesia, Critical Care and Pain Medicine Harvard Medical School Massachusetts General Hospital Boston Massachusetts U.S.A.
8. Departments of Surgery Harvard Medical School Brigham and Women's Hospital Boston Massachusetts U.S.A.