1. Nerve-Muscle Unit, Neurology Service, Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
2. Department of Neurology, University Hospital of Patras, Patras, Greece
3. Department of Neurology& Clinical Neurophysiology, Clinical Neuromuscular Imaging Group, Donders Center for Neuroscience, Radboudumc, Nijmegen, The Netherlands