[1] Univ Autonoma Barcelona, Escuela Posgrad, Barcelona, Spain
[2] Inst Invest Sanit Biodonostia, Unidad Esclerosis Mutiple, San Sebastian, Spain
[3] REEM, San Sebastian, Spain
[4] Hosp Univ Donostia, Serv Neurol, San Sebastian, Spain
[5] CIBERNED, Ctr Invest Red Enfermedades Neurodegenerat, Madrid, Spain
[6] Univ Basque Country, Dept Psicol Social & Metodol Ciencias Comportamie, San Sebastian, Gipuzkoa, Spain
[7] Univ Basque Country, Dept Personalidad Evaluac & Tratamiento Psicol, San Sebastian, Gipuzkoa, Spain