1. Department of Neurology; Saint-Antoine University Hospital; Paris
2. Department of Dermatology-Allergology; Tenon University Hospital; Paris
3. Paris 6 University-Pierre and Marie Curie University; Paris
4. Department of Functional Explorations; Franco-British Hospital Institute; Levallois-Perret
5. INSERM UMR S 707, Pierre and Marie Curie University; Paris France