1. CSL Behring King of Prussia Pennsylvania USA
2. Department of Neurology Johns Hopkins University School of Medicine Baltimore Maryland USA
3. Ellen and Martin Prosserman Centre for Neuromuscular Diseases Division of Neurology Department of Medicine University Health Network University of Toronto Toronto Canada
4. Institute for Research and Medical Consultations Imam Abdulrahman Bin Faisal University Dammam Saudi Arabia
5. Department of Neurology, UKD and Center for Neurology and Neuropsychiatry LVR Klinikum Medical Faculty Heinrich Heine University Düsseldorf Germany
6. Brain and Mind Centre University of Sydney Sydney Australia
7. Medical University of Vienna Vienna Austria
8. Department of Neurology Nagoya University Graduate School of Medicine Nagoya Japan
9. Department of Neurology Cedars‐Sinai Medical Center Los Angeles California USA
10. Department of Neurology Maastricht University Medical Center Maastricht The Netherlands
11. Curaçao Medical Center Willemstad Curaçao
12. CSL Behring Marburg Germany
13. Certara Princeton New Jersey USA
14. University of Basel Basel Switzerland
15. Department of Neurology Amsterdam University Medical Centres University of Amsterdam Amsterdam The Netherlands
16. Spaarne Gasthuis Haarlem The Netherlands