[1] Biogen Idec Inc, Weston, MA 02493 USA
[2] NYU, Rehabil Serv, New York, NY USA
[3] NYU, Rehabil & Res, New York, NY USA
[4] NYU, Neurol, New York, NY USA
[5] NYU, New York, NY USA
[6] Kessler Fdn, W Orange, NJ USA
[7] New York Sch Med, New York, NY USA
[8] Australian Natl Univ, Canberra, ACT, Australia