1. UC Gardner Neuroscience Institute and Gardner Family Center for Parkinson's Disease and Movement Disorders, Department of Neurology; University of Cincinnati; Cincinnati OH
2. Institute of Molecular and Clinical Sciences; St George's University of London; London United Kingdom
3. Edmond J. Safra Program in Parkinson's Disease, Morton and Gloria Shulman Movement Disorders Clinic, Toronto Western Hospital, University Health Network, Division of Neurology; University of Toronto; Toronto Ontario Canada
4. Krembil Brain Institute; Toronto Ontario Canada
5. University of Bordeaux, Institute of Neurodegenerative Diseases; Bordeaux France
6. National Center for Scientific Research, Institute of Neurodegenerative Diseases; Bordeaux France
7. Experimental Neurophysiology Laboratory; IRCCS San Raffaele Pisana, University San Raffaele; Rome Italy
8. Neurological Clinic; University of Perugia, Santa Maria della Misericordia Hospital; Perugia Italy