1. Pain Specialists Australia, Richmond, Victoria, Australia
2. Department of Neurosurgery, University Hospital of Wales, Cardiff, UK
3. Hunter Pain Specialists, Broadmeadow, New South Wales, Australia
4. Department of Pain Management, Cleveland Clinic, Cleveland, Ohio, USA
5. Barolat Neurosciences, Denver, Colorado, USA
6. Basildon and Thurrock University Hospitals, Basildon, UK
7. Anaesthesiology and Pain Medicine, Medical School, University of Western Australia and Royal Perth Hospital, Perth, Western Australia, Australia
8. Department of Neurology, Universitätsklinikum Schleswig-Holstein, Kiel, Germany
9. EHC—Hôpital de Morges, Morges, Switzerland
10. Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA
11. Center for Pain Relief, Charleston, West Virginia, USA
12. Department of Neurosurgery, Fondazione Istituto Neurologico “C. Besta,” Milano, Italy
13. The James Cook University Hospital, Middlesbrough, UK
14. Department of Psychiatry, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA
15. Center for Pain Medicine, Erasmus MC Pijnbehandelcentrum, Rotterdam, Zuid-Holland, Netherlands
16. Department of Anesthesiology, Danbury Hospital, Danbury, Connecticut, USA
17. Marcus Neuroscience Institute, Boca Raton, Florida, USA
18. Department of Neurosurgery, Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
19. Clinique de la Douleur, Hôpital de la Tour, Geneva, Switzerland
20. Department of Neurosurgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
21. Spine-Neurostimulation Functional Unit, PRISMATICS, Poitiers Hospital University, Poitiers, France
22. Department of Neurosurgery, University of Illinois at Chicago, Chicago, Illinois, USA
23. University of Washington Seattle, Washington, USA
24. Department of Orthopedics, Bassett Medical Center, Coopersown, New York, USA
25. Departments of Neurological Surgery & Anesthesiology & Pain Medicine, University of Washington, Seattle, Washington, USA