Author Contributions:Study concept and design: Payoux, Remy, Damier, Samson, and Agid. Acquisition of data: Payoux, Remy, Miloudi, Pidoux, and Gaura. Analysis and interpretation of data: Payoux, Remy, Loubinoux, and Rascol. Drafting of the manuscript: Payoux, Remy, Miloudi, Loubinoux, Gaura, and Agid. Critical revision of the manuscript for important intellectual content: Payoux, Damier, Loubinoux, Pidoux, Rascol, and Samson. Statistical expertise: Payoux and Loubinoux. Obtained funding: Remy, Damier, Samson, and Agid. Administrative, technical, and material support: Damier, Miloudi, Pidoux, Gaura, and Rascol. Study supervision: Payoux, Remy, Rascol, and Samson.