1 Department "G.F. Ingrassia" (CT, GM, CGC, CR, RT, CEC, LG, GD, GS, AL, MZ, AN), Section of Neurosciences, University of Catania, Catania, Italy; Oasi Research Institute-IRCCS (GM), Troina, Italy; INSERM (P-MP), University of Limoges, CHU Limoges, IRD, U1094 Tropical Neuroepidemiology, Institute of Epidemiology and Tropical Neurology, GEIST, Limoges, France; and Parkinson's Disease Center and Movement Disorders Clinic (JJ), Department of Neurology, Baylor College of Medicine, Houston, Texas.