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F. G. and 3. C. , Manuscript Preparation: A. Writing of the first draft, B. Review and Critique, C. Review and Critique, vol.2

M. S. , received grants from French Health Ministry (Programme Hospitalier de Recherche Clinique, 2010.

P. G. Iambio3, C. G. , M. M. , N. P. , R. V. et al., UTB Foundation, and Lejeune Foundation. M.V. received unrestricted support for research on Parkinson's disease from Mr Jean-Jacques Legrand (Société Francaise d'Esthétique). S.L. received grants support from Biogen and Fondation Bettencourt Schueller, Recherche Servier, 2013.