1. Department of Pulmonary Medicine, University Hospital (Inselspital) and University Bern, Switzerland; Interdisciplinary Sleep Wake Centre (SWEZ), University Hospital (Inselspital) and University Bern, Switzerland
2. b Interdisciplinary Sleep Wake Centre (SWEZ), University Hospital (Inselspital) and University Bern, Switzerland; V.A. Almazov Federal North-West Medical Research Centre, St Petersburg, Russia
3. Interdisciplinary Sleep Wake Centre (SWEZ), University Hospital (Inselspital) and University Bern, Switzerland; Department of Neurology, University Hospital (Inselspital) and University Bern, Switzerland
4. Department of Neurology, University Hospital (Inselspital) and University Bern,
3010 Bern, Switzerland