[1] Hasselt Univ, Biomed Res Inst, Diepenbeek, Belgium
[2] Transnationale Univ Limburg, Diepenbeek, Belgium
[3] Vrije Univ Amsterdam Med Ctr, Dept Mol Cell Biol & Immunol, Amsterdam, Netherlands
[4] Hosp Ramon & Cajal, Dept Neurol, E-28034 Madrid, Spain
[5] Hosp Ramon & Cajal, Dept Immunol, E-28034 Madrid, Spain
[6] Orbis Med Ctr, Dept Neurol, Sittard, Netherlands
[7] MS4 Res Inst, Nijmegen, Netherlands
[8] Maastricht Univ Med Ctr, Maastricht, Netherlands
[9] Radboud Univ Nijmegen Med Ctr, Donders Ctr Brain Cognit & Behav, Dept Neurol, Nijmegen, Netherlands
[10] Radboud Univ Nijmegen Med Ctr, Donders Ctr Brain Cognit & Behav, Dept Lab Med, Nijmegen, Netherlands
[11] Middelheim Hosp, Dept Neurol, Antwerp, Belgium
[12] Univ Antwerp, Inst Born Bunge, Dept Biomed Sci, Lab Neurochem & Behav, Antwerp, Belgium
[13] Univ Groningen, Dept Neurol, NL-9700 AB Groningen, Netherlands
[14] Univ Med Ctr Groningen, Groningen, Netherlands
[15] Melsbroek, Natl MS Ctr, Dept Neurol, Brabant, Belgium
[16] Univ Hosp Brussel, Brussels, Belgium
[17] Multiple Sclerosis & Rehabil Ctr, Overpelt, Belgium