1. National Referral Center for Neuromuscular DiseasesUniversity Hospital Pitié‐Salpétrière Paris France
2. Global Medical Affairs, LFB Les Ulis France
3. Department of Neurosciences, Molinette HospitalUniversità degli Studi di Torino Torino Italy
4. Department of StatisticsRouen University Rouen France
5. Wessex Neurological CentreSouthampton General Hospital Southampton UK
6. Neuromuscular and Neuroimmunology Service, Humanitas Clinical and Research CenterMilan University Milan Italy
7. National Referral Center for Neuromuscular DiseasesUniversity Hospital La Timone Marseille France
8. School of Life and Health Sciences, Aston Brain CentreAston University Birmingham UK
9. Neurology Department, La Fe University HospitalCentro de investigación Biomédica en red de enfermedades raras (CIBERER), University of Valencia Valencia Spain
10. Maastricht University Medical Center Maastricht The Netherlands
11. St. Elisabeth Hospital Willemstad Curacao