1. Department of Neurology; University of Utah; Salt Lake City Utah USA
2. Department of Neurology; University of Rochester Medical Center; Rochester New York USA
3. Department of Psychology; Texas A&M University; College Station Texas USA
4. Tourette Centre; IRCCS Galeazzi Hospital; Milan Italy
5. Functional Neurosurgical Unit; IRCCS Galeazzi Milano; Milan Italy
6. Department of Stereotactic and Functional Neurosurgery; University of Cologne; Cologne Germany
7. Royal Brisbane and Women's Hospital, School of Medicine, University of Queensland; Brisbane Queensland Australia
8. University College London Institute of Neurology; London United Kingdom
9. Department of Neurology; University of Alabama Birmingham; Birmingham Alabama USA
10. Department of Neurology; Baylor College of Medicine; Houston Texas USA
11. Department of Neurology; Mayo Clinic; Rochester Minnesota USA
12. Center for Neurological Restoration, Neurological Institute, Cleveland Clinic; Cleveland OH USA
13. Departments of Neurology; Neurosurgery; and Psychiatry; University of Florida Center for Movement Disorders and Neurorestoration; Gainesville Florida USA
14. Department of Neurosurgery; Beijing Tiantan Hospital; Capital University of Medical Sciences; Beijing China
15. Department of Neurosurgery; Maastricht University Medical Center; The Netherlands
16. Department of Neurology; Johns Hopkins University; Baltimore Maryland USA
17. Departments of Neurology and Psychiatry; The Ohio State University Wexner Medical Center; Ohio USA
18. Division of Neurosurgery; University of Toronto; Toronto Ontario Canada
19. Department of Medicine; Pamela Youde Nethersole Eastern Hospital; Hong Kong SAR China
20. Department of Neurosurgery; National Center Hospital; National Center of Neurology and Psychiatry (NCNP); Tokyo Japan
21. Institut du Cerveau et de la Moelle Epinière (ICM), CHU Pitié-Salpêtrière; Paris France
22. Centre de Recherche de l'Institut du Cerveau et de la Moelle épinière (CRICM), Université Pierre et Marie Curie-Paris 6; Paris France
23. Northern California Kaiser Permanente, Surgical Movement Disorders Program; Sacramento California USA
24. Departments of Neurosurgery and Neurology; New York University, Langone Medical Center; New York New York United States of America
25. Movement Disorders Center, Neurological Institute, University Hospitals and Case Western Reserve University School of Medicine; South Euclid Ohio USA
26. Department of Neurology; Emory University School of Medicine; Atlanta Georgia USA
27. Department of Neurosurgery; Emory University School of Medicine; Atlanta Georgia USA
28. Department of Psychiatry and Psychotherapy; University of Cologne; Cologne Germany
29. Child Study Center and the Yale Center for Clinical Investigation, Yale University School of Medicine; New Haven Connecticut USA
30. Department of Neurological Surgery; Vanderbilt University Medical Center; Nashville Tennessee USA