1. Department of Neurology; McGill University, Montreal General Hospital; Montreal Quebec Canada
2. Sleep Medicine Center for Advanced Studies; Sacred Heart Hospital of Montreal; Montreal Quebec Canada
3. Neurology Service, Hospital Clinic of Barcelona; August Pi i Sunyer Biomedical Research Institute, Center for Biomedical Research in Neurodegenerative Diseases; Barcelona Spain
4. Department of Neurology; Innsbruck Medical University; Innsbruck Austria
5. Sleep Disorders Unit; Pitié-Salpêtrière Hospital, Public Hospital Network of Paris and French National Institute for Health and Medical Research, Institute of Brain and Spine Research Center, Pierre and Marie Curie University; Paris France
6. Sleep Disorders Center; Vita-Salute San Raffaele University; Milan Italy
7. C. Mondino National Neurological Institute; Pavia Italy
8. Department of Neurology; Dokkyo Medical University, Koshigaya Hospital; Saitama Japan
9. Department of Neurology; Philipps University; Marburg Germany
10. Department of Neurology; Gui de Chauliac Hospital, Montpellier, French National Institute for Health and Medical Research; Montpellier France
11. Washington University Multidisciplinary Sleep Center; St Louis MO
12. Sleep Center, Department of Cardiovascular and Neurological Sciences; University of Cagliari; Cagliari Italy
13. Department of Neurology, First Faculty of Medicine; Charles University and General University Hospital; Prague Czech Republic
14. Department of Neurology; Dokkyo Medical University School of Medicine; Tochigi Japan
15. Department of Neurology; University of Auvergne; Clermont-Ferrand France