1. Sleep and Brain Plasticity Centre, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience (IoPPN), King's College London, United Kingdom
2. Sleep Disorders Centre, Guy's and St, Thomas’ National Health Service Foundation Trust, London, United Kingdom
3. Department of Neurology, Inselspital, University of Bern, Switzerland
4. Neurology Department, Sechenov First Moscow State Medical University, Moscow, Russia