1. Department of Neurology; Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht; Utrecht the Netherlands
2. Department of Pathology and Laboratory Medicine; Perelman School of Medicine at the University of Pennsylvania; Philadelphia PA
3. Department of Clinical Genetics; Section of Medical Genomics, VU University Medical Center; Amsterdam the Netherlands
4. Department of Neurology; Erasmus Medical Center; Rotterdam the Netherlands
5. Medical Research Council Centre for Neurodegeneration Research; King's College London; Department of Clinical Neuroscience; Institute of Psychiatry; London United Kingdom
6. Department of Neurology; University of Ulm; Ulm Germany
7. Department of Neurology; Beaumont Hospital; Dublin Ireland
8. Department of Neurology; Trinity College; Dublin Ireland
9. Department of Neurology; University of Massachusetts School of Medicine; Worcester MA
10. Department of Neurology; Massachusetts General Hospital; Charlestown MA
11. Department of Neuroscience and Pharmacology; Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht; Utrecht the Netherlands
12. Department of Pharmacology and Clinical Neuroscience; Umeå University; Umeå Sweden
13. Department of Epidemiology and Biostatistics; Erasmus University Medical Center Rotterdam; Rotterdam the Netherlands
14. Department of Neurology; University Hospital Leuven, University of Leuven; Leuven Belgium
15. Laboratory for Neurobiology; Vesalius Research Center, Flanders Institute for Biotechnology; Leuven Belgium
16. UMR-986, Inserm and University of Paris 11, Bicetre Hospital; Paris France
17. Department of Neurology; Pierre et Marie Curie University, Salpêtrière Hospital; Paris France
18. Academic Neurology Unit; Department of Neuroscience; Sheffield Institute for Translational Neuroscience, University of Sheffield; Sheffield United Kingdom
19. School of Clinical and Experimental Medicine, College of Medicine and Dentistry, University of Birmingham, and Neurosciences Division, University Hospitals Birmingham; Birmingham United Kingdom
20. Department of Neurology and Laboratory of Neuroscience; IRCCS Italian Auxology Institute; Milan Italy
21. Rita Levi Montalcini; Department of Neuroscience; University of Turin and City Hospital of Health and Science; Turin Italy
22. Neuromuscular Diseases Research Unit, Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health; Bethesda MD
23. Department of Neurology; Brain Sciences Institute, Johns Hopkins University; Baltimore MD
24. Neuromuscular Diseases Unit, St Gallen Cantonal Hospital; St Gallen Switzerland
25. Department of Medical Genetics; Biomedical Genetics, University Medical Center Utrecht; Utrecht the Netherlands
26. Department of Pathophysiology and Transplantation; Dino Ferrari Center, University of Milan; Milan Italy