1. Department of Orthopaedics, University Health Lakewood Medical Center , Kansas City, MO 64139, United States
2. Department of Physical Medicine and Rehabilitation, Vanderbilt University Medical Center , Nashville, TN 37212, United States
3. Department of Anesthesiology and Perioperative Medicine, Mayo Clinic , Jacksonville, FL 32224, United States
4. Pain Diagnostic and Interventional Care , Sewickley, PA 15143, United States
5. Department of Anesthesiology, University of Virginia Medical Center , Charlottesville, VA 22903, United States
6. Departments of Anesthesiology, Neurobiology and Anatomy, Wake Forest University School of Medicine , Winston-Salem, NC 27101, United States
7. Departments of Anesthesiology, Neurology, Physical Medicine & Rehabilitation, and Psychiatry, Johns Hopkins School of Medicine , Baltimore, MD 21205, United States
8. Department of Radiology, University of California San Francisco , San Francisco, CA 94143, United States
9. Department of Physical Medicine and Rehabilitation, University of Utah School of Medicine , Salt Lake City, UT 84132, United States