1. Sleep and Epilepsy Center, Neurocenter of Southern Switzerland, Civic Hospital (EOC) of Lugano, Lugano, Switzerland
2. Laboratory of Autonomic Nervous System Disorders, Sechenov First Moscow State Medical University, Moscow, Russia
3. Universitätsklinik für Neurologie, Inselspital, Bern University Hospital, Bern, Switzerland
4. Department of Internal Medicine, Civic Hospital (EOC) of Lugano, Lugano, Switzerland
5. Sleep Research Centre, Department of Neurology I.C., Oasi Institute (IRCCS), Troina, Italy