1. Department of Neuropsychiatry, BSMHFT and University of Birmingham, Birmingham, United Kingdom
2. Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology and University College London, London, United Kingdom
3. School of Life and Health Sciences, Aston Brain Centre, Aston University, Birmingham, United Kingdom
4. Department of Neurology, Charité, University Medicine Berlin, Germany
5. French Reference Centre for Gilles de la Tourette Syndrome, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
6. Sorbonne Universités, UPMC Université Paris 06, UMR S 1127, CNRS UMR 7225, ICM, Paris, France
7. Department of Neurology, Groupe Hospitalier Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris, Paris, France
8. Department of Clinical Neurosciences, Cumming School of Medicine, University of Calgary and Hotchkiss Brain Institute, Calgary, Canada
9. Department of Clinical Neurosciences, Psychiatry, Pediatrics and Community Health Sciences, University of Calgary, Calgary, Canada