1. Center for Parkinson Disease and Extrapyramidal Disorders, Movement Disorders Unit, Institute of Neurology, Catholic University, Rome, Italy
2. IRCCS Istituto delle Scienze Neurologiche di Bologna, Bologna, Italy; Department of Biomedical and NeuroMotor Sciences (DIBINEM), Alma Mater Studiorum, University of Bologna, Bologna, Italy
3. Sleep Disorders Unit, Institute of Neurology, Rome, Italy