1. Department of Psychiatry and Behavioral Sciences, Center for Sleep Sciences and Medicine, Stanford University , Palo Alto, CA , USA
2. Kleine-Levin Syndrome Foundation , Boston, MA , USA
3. National Reference Centre for Orphan Diseases, Narcolepsy-Rare Hypersomnias, Sleep Unit, Department of Neurology, CHU Montpellier, Univ Montpellier , Montpellier , France
4. Department of Neurology, Institute for Neurosciences of Montpellier INM, Univ Montpellier, INSERM , Montpellier , France
5. Hackensack University Medical Center , Hackensack, NJ , USA
6. Sleep Disorders Center, Hôpitaux Universitaires de Strasbourg , Strasbourg , France
7. Department of Biomedical and Neuromotor Sciences, University of Bologna and IRCCS Institute of Neurological Sciences , Bologna , Italy
8. Heads UP Service, East London NHS Foundation Trust , London , UK
9. Department of Psychiatry, St. Vincent’s Hospital, Catholic University of Korea , Seoul , South Korea
10. Department of Child Psychiatry and Sleep Center, Chang Gung Memorial Hospital and University , Taoyuan , Taiwan
11. Sleep Disorders, Pitié-Salpêtrière Hospital, Assistance Publique-Hôpitaux de Paris-Sorbonne, National Reference Center for Narcolepsy, Idiopathic Hypersomnia and Kleine-Levin Syndrome , Paris , France
12. Sorbonne University, Institut Hospitalo-Universitaire, Institut du Cerveau et de la Moelle , Paris , France
13. Department of Medicine and Clinical Research Core, Weill Cornell Medicine—Qatar, Qatar Foundation—Education City , Doha , Qatar