1. Department of Neuroscience, Institute of Psychiatry, Psychology, and Neuroscience (IoPpn), King’s College London, London, UK
2. Parkinson’s Foundation Centre of Excellence, King’s College Hospital NHS Foundation Trust, London, UK
3. Sleep and Brain Plasticity Centre, Department of Neuroimaging, Institute of Psychiatry, Psychology and Neuroscience (IoPpn), King’s College London, London, UK
4. Sleep Disorder Centre, Nuffield House, Guy’s Hospital, London, UK
5. Department of Neurology and Experimental Neurology, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität, Berlin, Germany
6. Department of Neurology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany
7. Department of Neurology, Medical University of Vienna, Vienna, Austria
8. Faculty of Medicine, Transilvania University of Braşov, Brașov, Romania
9. Department of Neurology, County Clinic Hospital, Braşov, Romania