[1] Missouri Baptist Med Ctr, MS Ctr Innovat Care, St Louis, MO USA
[2] Vero Beach Neurol & Res Inst, Vero Beach, FL USA
[3] McGill Univ, Montreal Neurol Inst, Montreal, PQ, Canada
[4] NeuroRx Inc, Wilmington, DE USA
[5] Swedish Neurosci Inst, Multiple Sclerosis Ctr, Seattle, WA USA
[6] North Cent Neurol Associates, Cullman, AL USA
[7] Biogen, Cambridge, MA USA
[8] Alkermes Inc, Dublin, Ireland
[9] Washington Univ, Sch Med, St Louis, MO 14263 USA