1. Neuromuscular Reference Centre, Department of Neurology University Hospital Saint‐Luc Brussels Belgium
2. Department of Neurology, Erasmus MC University Medical Center Rotterdam The Netherlands
3. Department of Neurology King's College Hospital London UK
4. Cochrane Belgium, CEBAM, Leuven, Belgium and CEBaP, Belgian Red Cross Mechelen Belgium
5. Cochrane Belgium, CEBAM Leuven Belgium
6. Department of Neurology University of Minnesota Minneapolis Minnesota USA
7. Centre de Référence des Maladies Neuromusculaires et de la SLA, APHM, CHU Timone Marseille France
8. Patient Representative GBS/CIDP Foundation International, International Office Philadelphia Pennsylvania USA
9. Department of Neurology Johns Hopkins University School of Medicine Baltimore Maryland USA
10. Department of Neurology, Amsterdam UMC University of Amsterdam Amsterdam The Netherlands
11. Department of Neuromuscular Disorders University Medical Centre Utrecht Utrecht The Netherlands
12. Department of Neurology Århus University Hospital Århus Denmark
13. Department of Neurology Chiba University Hospital Chiba Japan
14. Department of Neurology Cedars‐Sinai Medical Center Los Angeles California USA
15. Department of Neurology and MRC Centre for Neuromuscular Diseases National Hospital for Neurology and Neurosurgery London UK
16. Neuromuscular and Neuroimmunology Service, IRCCS Humanitas Clinical and Research Center, Department of Medical Biotechnology and Translational Medicine University of Milan Milan Italy
17. Neuromuscular Diseases Unit—Neurology Department Hospital de la Santa Creu I Sant Pau Barcelona Spain
18. Regional Neuromuscular Service, Neurology Queen Elizabeth Hospital Birmingham Birmingham UK
19. Neurology Clinic University Hospital Würzburg Würzburg Germany
20. Department of Pediatrics Yeditepe University İstanbul Turkey