1. Center for Movement Disorders & Neurorestoration, University of Florida, Gainesville, Florida, USA
2. Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
3. Department of Statistics, University of Florida, Gainesville, Florida, USA
4. National Parkinson’s Foundation, Miami, Florida, USA
5. Parkinson’s Disease and Movement Disorders Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
6. Movement Disorders Unit, Department of Neurology, Tel-Aviv Sourasky Medical Center, Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
7. The Movement Disorders Centre, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
8. Radboud University Nijmegen Medical Center, Donders Institute for Brain, Cognition and Behavior, Department of Neurology, Nijmegen, Netherlands