1. Nerve-Muscle Unit, Department of Clinical Neurosciences; Lausanne University Hospital (CHUV); Lausanne Switzerland
2. Division of Neurology, Department of Clinical Neurosciences; University Hospital of Geneva (HUG); Geneva Switzerland
3. Department of Rheumatology; Lausanne University Hospital (CHUV); Lausanne Switzerland
4. Department of Neurology; Basel University Hospital; Basel Switzerland