1. Department of Neurology, Rudolf Magnus Institute of Neuroscience, University Medical Centre Utrecht, Utrecht, The Netherlands
2. Nuffield Department of Clinical Neurosciences, Oxford University, Oxford, UK
3. Hans-Berger Department of Neurology, University Hospital Jena, Jena, Germany
4. Neuroimaging Research Unit and Department of Neurology, Institute of Experimental Neurology, Division of Neuroscience, San Raffaele Scientific Institute, Vita-Salute San Raffaele University, Milan, Italy
5. Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida, USA