1 Department of Clinical Pharmacology and Neurosciences, Parkinson Expert Centre, Centre d'Investigation Clinique CIC1436, University Hospital of Toulouse, NeuroToul COEN Centre, Toulouse, France.
2 Toulouse NeuroImaging Centre (ToNIC-UMR1214 INSERM/UT3), Toulouse, France.
3 Department of Neurology, CHU Clermont-Ferrand, Université Clermont-Auvergne, CNRS, IGCCN, Institut Pascal, NS-PARK/FCRIN Network, Clermont Ferrand, France.