[1] Italian Hosp Buenos Aires, Dept Neurol, Buenos Aires, DF, Argentina
[2] Italian Hosp Buenos Aires, Dept Pathol, Buenos Aires, DF, Argentina
[3] Vall dHebron Barcelona Hosp Campus, Multiple Sclerosis Ctr Catalonia Cemcat, Barcelona 08035, Spain
[4] Univ Autonoma Barcelona, Hosp Univ Vall dHebron, Sect Neuroradiol, Dept Radiol IDI,Vall dHebron Inst Recerca, Barcelona, Spain
[5] Univ Autonoma Barcelona, Hosp Univ Vall dHebron, Magnet Resonance Unit, Dept Radiol IDI,Vall dHebron Inst Recerca, Barcelona, Spain