1. Center for Pain Relief; Charleston West Virginia U.S.A.
2. UKHealthCare Pain Services; Department of Anesthesiology; University of Kentucky College of Medicine; Lexington Kentucky U.S.A.
3. Evolve Restorative Clinic; Santa Rosa California U.S.A.
4. Functional Neurosurgery; St. Lukes University Health Network; Bethlehem Pennsylvania U.S.A.
5. Division of Pain Medicine; Department of Anesthesiology; Mayo Clinic; Rochester Minnesota U.S.A.
6. Texas Spine and Joint Hospital; Tyler Texas U.S.A.
7. Pain Diagnostics and Interventional Care; Sewickley Pennsylvania U.S.A.
8. University of Kansas Medical Center; Kansas City Kansas U.S.A.
9. Summit Pain Alliance; Sonoma California U.S.A.
10. Montefiore Medical Center; SUNY-Buffalo; Buffalo New York U.S.A.
11. Ainsworth Institute of Pain Management; New York New York U.S.A.
12. Anesthesiology and Pain Medicine; HCA Midwest Health; Overland Park Kansas U.S.A.
13. Millennium Pain Center; Bloomington Illinois U.S.A.
14. College of Medicine; University of Illinois; Urbana-Champaign Illinois U.S.A.
15. Stanford Health Care; Henderson Nevada U.S.A.
16. Rutgers Robert Wood Johnson Medical School; Department of Pain Medicine; Saint Peter's University Hospital; New Brunswick New Jersey U.S.A.
17. Manhattan Spine and Pain Medicine; Lenox Hill Hospital; New York New York U.S.A.
18. Pain Medicine and Orthopedics; NYU Langone Hospitals Center; New York New York U.S.A.
19. Carolina's Pain Institute at Brookstown; Wake Forest Baptist Health; Winston-Salem North Carolina U.S.A.
20. Department of Anesthesiology; Danbury Hospital; Danbury Connecticut U.S.A.
21. Anesthesiology and Pain Medicine; Amoskeag Anesthesiology; Manchester New Hampshire U.S.A.
22. Department of Anesthesiology; University of Kentucky; Lexington Kentucky U.S.A.
23. Department of Anesthesiology, Critical Care and Pain Medicine; Beth Israel Deaconess Medical Center; Harvard Medical School; Boston Massachusetts U.S.A.
24. Pain Doctor Inc.; Phoenix Arizona U.S.A.
25. Arizona Pain; Midwestern Medical School; Glendale Arizona U.S.A.
26. Pain Management; Cleveland Clinic; Cleveland Ohio U.S.A.
27. Rush University Medical Center; Chicago Illinois U.S.A.
28. Evidence-Based Pain Management Research and Education; Cleveland Clinic; Cleveland Ohio U.S.A.