1. Department of Neurology Erasmus University Medical Center Rotterdam The Netherlands
2. Department of Neurology Haga Teaching Hospital The Hague The Hague The Netherlands
3. Department of Neurology University Hospital St‐Luc Brussels Belgium
4. Department of Neurology King's College Hospital London UK
5. Department of Neurology University of Malaya Kuala Lumpur Malaysia
6. Department of Neurology The University of Kansas Medical Center Kansas City Kansas USA
7. Department of Neurology Hospital Universitario Infanta Sofia San Sebastian Spain
8. Department of Neurology, Toronto General Hospital University Health Network Toronto Canada
9. Clinical Neurophysiology, Department of Neurology The Royal Melbourne Hospital Parkville Australia
10. Department of Neurology University Hospital of Cologne Cologne Germany
11. Department of Clinical Neurophysiology, Reference Centre for Neuromuscular Disorders AOC, Filnemus, Euro‐NMD University of Nantes Nantes France
12. Department of Neurology Hospital Británico Buenos Aires Argentina
13. Department of Neuroscience, Imaging and Clinical Sciences University “G. D'Annunzio” Chieti Italy
14. Department of Neurology, Amsterdam Neuroscience, Amsterdam University Medical Centers University of Amsterdam Amsterdam The Netherlands
15. Department of Neurology University of Vermont Medical Centre Burlington Vermont USA
16. Department of Neurology Johns Hopkins University Baltimore Maryland USA
17. Department of Immunology Erasmus University Medical Center Rotterdam The Netherlands