1 Department of Neurology, Rutgers-Robert Wood Johnson Medical School, New Brunswick, NJ.
2 Department of Neurological Sciences, Rush University Medical Center, Chicago, IL.
3 Sorbonne Université, Assistance Publique Hôpitaux de Paris, Inserm, CNRS, Institut du Cerveau - Paris Brain Institute - ICM, Pitié-Salpêtrière Hospital, Department of Neurology, Centre d'Investigation Clinique Neurosciences, Paris, France.
4 Parkinson's Disease Clinic, Office of the Clinical Director, NIH/NINDS, Bethesda, MD.
5 Department of Neurology, Mount Sinai Beth Israel, Icahn School of Medicine at Mount Sinai, NY, New York.
6 Department of Neurology, College of Physicians and Surgeons, Columbia University Medical Center, New York, NY.
7 Department of Neurology, St. Olavs Hospital and Department of Neuroscience, Norwegian University of Science and Technology, Trondheim, Norway.
8 Robert Wood Johnson Medical School Institute for Neurological Therapeutics, Rutgers Biomedical and Health Sciences, Piscataway, NJ.
9 Department of Neurosurgery, Rush University Medical Center, Chicago, IL.
10 Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam Neuroscience, Amsterdam, the Netherlands.
11 Department of Clinical & Movement Neurosciences, UCL Institute of Neurology, London, UK.