[1] Univ Leipzig, Dept Neurol, Leipzig, Germany
[2] Missouri Baptist Med Ctr, MS Ctr Innovat Care, St Louis, MO USA
[3] Univ Belgrade, Clin Neurol, Belgrade, Serbia
[4] Alkermes, Waltham, MA USA
[5] Biogen, Cambridge, MA USA
[6] Biogen, Maidenhead, Berks, England
[7] Vero Beach Neurol & Res Inst, Vero Beach, FL USA