1. Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
2. Department of Physiology and Neurobiology, University of Connecticut, Storrs, CT
3. Department of Life Sciences and UK Dementia Research Institute, Imperial College London, UK
4. Centre National de Référence Narcolepsie Hypersomnies, Unité des Troubles du Sommeil, Service de Neurologie, Hôpital Gui-de-Chauliac, Université Montpellier, INSERM, Montpellier, France