Affiliation: | 1. Sobell Department of Motor Neuroscience, Institute of Neurology, University College London, London, United Kingdom;2. Department of Neurosciences, Ophthalmology and Genetics, University of Genoa, Italy;3. Department of Neurologic and Psychiatric Sciences, University of Bari, Italy;4. Department of Neurology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands;5. Royal Free and University College Medical School, University College London, London, United Kingdom |