1. Department of Pharmacology Temple University School of Medicine Philadelphia Pennsylvania U.S.A
2. Department of Medicine Johns Hopkins University School of Medicine Baltimore Maryland U.S.A
3. Department of Anesthesiology Georgetown University School of Medicine Washington District of Columbia U.S.A
4. Naples Anesthesia and Pain Associates Naples Florida U.S.A
5. Departments of Anesthesiology and Orthopedics Pain Medicine NYU Langone‐Hospital for Joint Diseases New York New York U.S.A
6. Pain Management and Palliative Care at Englewood Hospital and Medical Center Englewood New Jersey U.S.A
7. International Clinical Research Institute Overland Park Kansas U.S.A