1. Department of Physical Medicine and Rehabilitation, University of Utah, Salt Lake City, Utah
2. Department of Anesthesiology, University of California San Diego, San Diego, California
3. Department of Anesthesiology, Northwestern University, Chicago, Illinois
4. Department of Physical Medicine and Rehabilitation, The Shirley Ryan AbilityLab, Chicago, Illinois
5. Department of Orthopaedics, Stanford University, Palo Alto, California
6. Northwest Suburban Pain Center, Schaumberg, Illinois
7. Department of Physical Medicine and Rehabilitation, Emory University, Atlanta, Georgia
8. Department of Anesthesiology, University of Chicago, Chicago, Illinois
9. Department of Anesthesiology, Lahey Clinic, Burlington, Massachusetts
10. Department of Anesthesiology, Rhode Island Hospital The Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA