1. Neuromuscular Diseases Unit Department of Neurology Hospital de la Santa Creu i Sant Pau Barcelona Spain
2. Department of Medicine Universitat Autónoma de Barcelona Barcelona Spain
3. Biomedical Research Institute Sant Pau (IIB Sant Pau) Barcelona Spain
4. Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER) Instituto de Salud Carlos III Madrid Spain
5. Department of Neurology Hospital Universitario Infanta SofíaUniversidad Europea de Madrid San Sebastián de los Reyes Spain
6. Department of Thoracic Surgery Hospital de la Santa Creu i Sant Pau Barcelona Spain
7. Neurology Department Neuromuscular Disorders Unit Instituto de Biomedicina de SevillaHospital U. Virgen del Rocío, CSICUniversidad de Sevilla Seville Spain
8. Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED) Instituto de Salud Carlos III Madrid Spain
9. Neuromuscular Unit Neurology Department Hospital Universitario de Bellvitge, Hospitalet de Llobregat Barcelona Spain
10. Neurometabolic Diseases Group Bellvitge Biomedical Research Institute (IDIBELL), Hospitalet de Llobregat Barcelona Spain
11. Neuromuscular Diseases and ALS Unit Department of Neurology Institute of NeurosciencesHospital Universitario Clínico San Carlos Madrid Spain
12. Neuromuscular Diseases Unit Department of Neurology Hospital Germans Trias i Pujol Badalona Spain
13. Department of Neurology Hospital Clínico de Santiago de Compostela Santiago de Compostela Spain
14. Neuromuscular Unit Neurology Department Hospital Universitari i Politècnic La Fe Department of Medicine Universitat de València, and Biomedical Research Institute La Fe (IIS La Fe) Valencia Spain
15. Department of Neurology Reina Sofia University Hospital Cordoba Spain
16. Neuromuscular Unit Hospital Universitario de Donostia. Biodonostia Health Research InstituteUniversity of the Basque Country Gipuzkoa Spain
17. Department of Neurology Complejo Hospitalario de NavarraIdisNa (Instituto Investigación Sanitaria Navarra) Pamplona Spain
18. Department of Neurology Hospital Universitario Marqués de ValdecillaUniversity of Cantabria Santander Spain
19. Department of Neurology Complejo Asistencial Hospitalario de Burgos Burgos Spain
20. Department of Neurology Hospital Universitario de Valme Seville Spain
21. Hospital Universitario de Gran Canaria Doctor Negrín Las Palmas de Gran Canaria Spain
22. Department of Neurology Complejo Hospitalario Universitario de Canarias Santa Cruz de Tenerife Spain