1. Gardner Family Center for Parkinson’s Disease and Movement Disorders, Department of Neurology, University of Cincinnati, Cincinnati, OH, USA,
2. Department of Human Neurosciences, Sapienza University of Rome, Rome, Italy,
3. IRCCS Neuromed, Pozzilli (IS), Italy,
4. Parkinson’s Disease Center and Movement Disorders Clinic, Department of Neurology, Baylor College of Medicine, Houston, TX, USA.
5. Department of Neurology, Santa Maria University Hospital, Terni, Italy.