[1] Hosp Univ & Politecn La Fe, Neuromuscular Unit, Dept Neurol, Valencia, Spain
[2] Hosp Univ La Paz, Dept Neuropediat, Madrid, Spain
[3] Hosp St Joan Deu, Neuromuscular Unit, Neuropediat Dept, Inst Recerca Pediat, Barcelona, Spain
[4] Hosp Virgen del Rocio, Dept Neurol, Seville, Spain
[5] Hosp Univ Vall dHebron, Dept Neurol, Barcelona, Spain
[6] Bellvitge Hosp IDIBELL, Dept Neurol, Motor Neuron Unit, Barcelona, Spain
[7] Hosp Clin Univ Virgen de la Arrixaca, Dept Neurol, Neuromuscular Unit, Murcia, Spain
[8] Univ Hosp Nuestra Senora Candelaria, Dept Neurol, Tenerfie, Spain
[9] Univ Hosp Burgos, Dept Neurol, Burgos, Spain
[10] Hosp Santa Creu & Sant Pau, Dept Neurol, Neuromuscular Unit, Barcelona, Spain
[11] Univ Hosp Reina Sofia, Dept Neurol, Cordoba, Spain
[12] Univ Hosp Son Espases, Dept Neuropediat, Palma De Mallorca, Spain
[13] Univ Hosp Donostia, Dept Neurol, San Sebastian, Spain
[14] Univ Hosp Navarra, Dept Neurol, Navarra, Spain
[15] Hosp Gen Univ Toledo, Dept Pediat Neurol, Toledo, Spain
[16] Univ Hosp Maternoinfantil Canarias, Dept Pediat Neurol, Las Palmas Gran Canaria, Spain
[17] Univ Politecn Valencia, Dept Appl Stat & Operat Res & Qual, Valencia, Spain
[18] Hosp Valle De Hebron, VHIR, Dept Clin & Mol Genet, Barcelona, Spain
[19] Hosp Valle De Hebron, VHIR, Rare Dis Unit, Barcelona, Spain
[20] Hosp Valle De Hebron, VHIR, Med Genet Grp, Barcelona, Spain
[21] Univ Valencia, Dept Med, Valencia, Spain
[22] Ctr Invest Biomed Red Enfermedades Raras CIBERER, Valencia, Spain