Affiliation: | 1. Pain Relief and Palliative Care Unit, 1st Anaesthesiology Clinic, Aretaieion University Hospital, University of Athens, Athens, Greece;2. Department of Neurology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, U.K;3. 1st Department of Neurology, University of Athens, Athens, Greece;4. Inserm U987, Ambroise Paré Hospital, Boulogne‐Billancourt, France;5. Cochin‐Hotel‐Dieu Hospital, APHP, Paris, France |