1 Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, Queen Square, London, UK; Department of Neurology, University Hospital Heidelberg, Heidelberg, Germany.
2 Dipartimento di Scienze Neurologiche e del Movimento, Università di Verona, Verona, Italy.
3 Department of Neurology, Kantonsspital St. Gallen, St. Gallen, Switzerland.
4 Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, Queen Square, London, UK.
5 Department of Neurology, University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany.
6 Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy.
7 Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, Queen Square, London, UK. Electronic address: [email protected].