[1] Pontificia Univ Catolica Chile, Neurol, Santiago, Chile
[2] Hosp Clin Barcelona, Inst Invest Biomed August Pi i Sunyer IDIBAPS, Ctr Neuroimmunol, Barcelona, Spain
[3] Univ Barcelona, Hosp Clin, Ctr Neuroimmunol, Barcelona, Spain
[4] Sant Joan Deu Childrens Hosp, Ophthalmol Dept, Barcelona, Spain
[5] Univ Hosp Navarra, Neurol, Navarra, Spain
[6] Sant Joan Deu Childrens Hosp, Pediat Neuroimmunol Unit, Barcelona, Spain