1. From INSERM U455 (D.C., J.-F.D., X de B., N.M.), Federation de Neurologie (M.P.), and PET Centre (D.C., J.-F.D.), University Hospital Purpan, Toulouse, France; Department of Neurology, University of Cambridge, Cambridge, UK (J.-C.B.); Department of Neurology “Déjerine” (Pr Defer), University Hospital of Caen, Equipe Universitaire-Université de Basse Normandie, Caen, France (R.-M.M.); INSERM U 320, Centre Cyceron, Caen, France (R.-M.M., J.-C.B.); and Department of Neurology “Vastel” (Pr Viader),...