1 Department of Neurology, UKSH-Kiel Campus, Christian-Albrechts-University, Kiel, Germany.
2 Parkinson and Movement Disorders Unit, Department of Neuroscience, University of Padua, Padova, Italy.
3 Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal.
4 Department of Neurology, Centre d'Investigation Clinique Neurosciences, Sorbonne Université, Institut du Cerveau-Paris Brain Institute-ICM, Assistance Publique Hôpitaux de Paris, Inserm, CNRS, Pitié-Salpêtrière Hospital, Paris, France.
5 Department of Human Neurosciences, Sapienza University of Rome, Roma, Italy.
6 IRCCS Neuromed, Pozzilli, Italy.
7 Faculdade de Medicina, Universidade de Lisboa, IMM Instituto de Medicina Molecular João Lobo Antunes, Lisbon, CNS Campus Neurológico, Torres Vedras, Portugal.
8 Department of Clinical & Movement Neurosciences, UCL Institute of Neurology, Queen Square, London, UK.
9 Unidad de Trastornos del Movimiento Servicio de Neurología y Neurofisiología Clínica, Instituto de Biomedicina de Sevilla Hospital Universitario Virgen del Rocío/CSIC/Universidad de Sevilla, Seville, Spain.
10 Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas, Madrid, Spain.
11 Departamento de Medicina Facultad de Medicina, Universidad de Sevilla, Seville, Spain.
12 Klinik f. Neurologie, Medizinische Universität Innsbruck, Innsbruck, Austria.
13 Department of Neurology and Neurosurgery, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia.
14 Tartu University Hospital, Tartu, Estonia.
15 Department of Neurology and Center of Clinical Neuroscience, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.
16 Department of Neurology, Pirogov Russian National Research Medical University, Moscow, Russia.
17 Cochrane Response, London, UK.
18 Division of Neurology, CHU of Grenoble, Grenoble Institute of Neurosciences, INSERM U1216, Grenoble Alpes University, Grenoble, France.