[1
]University of Cincinnati Gardner Neuroscience Institute, Gardner Family Center for
Parkinson’s Disease and Movement Disorders, Department of Neurology, University of
Cincinnati, Cincinnati, Ohio.
[2
]Department of Neurology, University Hospital Inselspital, Bern, Switzerland
[3
]Neuropsychiatry, Centre for Clinical Brain Studies, University of Edinburgh, Edinburgh,
United Kingdom
[4
]Motor Control and Movement Disorders Group, Institute of Molecular and Clinical Sciences,
St George's University of London, London, United Kingdom
[5
]Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, King's
College London, London, United Kingdom
[6
]Human Motor Control Section, National Institute of Neurological Disorders and Stroke,
National Institutes of Health, Bethesda, Maryland
[7
]Department of Neurology, University of Louisville, Louisville, Kentucky
[8
]Department of Psychiatry, Alpert Medical School of Brown University, Providence, Rhode
Island
[9
]Department of Neurology, Alpert Medical School of Brown University, Providence, Rhode
Island
[10
]Morton and Gloria Shulman Movement Disorders Centre, Toronto Western Hospital and
Edmond J. Safra Program in Parkinson Disease, University of Toronto, Toronto, Ontario,
Canada
[11
]Section of Cognitive Neuropsychiatry, Department of Psychosis Studies, Institute of
Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
[12
]Academic Neurology Unit, University of Sheffield, Royal Hallamshire Hospital, Sheffield,
United Kingdom
[13
]Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
[14
]Centre for Clinical Brain Sciences, University of Edinburgh, Western General Hospital,
Edinburgh, United Kingdom.
[15
]Department of Clinical and Experimental Medicine, University of Messina, Messina,
Italy