1. Sleep Clinic, Pitie-Salpetriere University Hospital, Assistance Publique-Hôpitaux de Paris-Sorbonne, Paris, France
2. Neurology Department, Centro Hospitalar Universitario de Sao Joao, EPE, Porto, Portugal
3. Interdisciplinary sleep center Lübeck, Paris 16, France
4. Sorbonne University, Paris France