[1] Danderyd Hosp, Karolinska Inst, Neurol Unit, Div Internal Med, SE-18288 Stockholm, Sweden
[2] Danderyd Hosp, Karolinska Inst, Dept Radiol, SE-18288 Stockholm, Sweden
[3] Danderyd Hosp, Karolinska Inst, Neuroimmunol Unit, Dept Clin Neurosci, SE-18288 Stockholm, Sweden
[4] NINDS, Lab Mol Med & Neurosci, NIH, Bethesda, MD 20892 USA