1. Department of Rehabilitation Medicine, Icahn School of Medicine at Mount Sinai, New York, New York.
2. Department of Public Health, Erasmus Medical Center, Rotterdam, the Netherlands.
3. Department of Neurosurgery, Antwerp University Hospital, Edegem, Belgium.
4. Department of Neurological Surgery, University of California, San Francisco, California.
5. Department of Radiology, University of California, San Francisco, California.
6. Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
7. Department of Psychology, University of Texas at Austin, Austin, Texas.
8. Seton Brain and Spine Institute, Austin, Texas.
9. Division of Anesthesia, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom.