[1] NYU, Langone Med Ctr, New York, NY USA
[2] Georgetown Univ Hosp, Neurol, Washington, DC 20007 USA
[3] Rocky Mt MS Clin, Salt Lake City, UT USA
[4] SUNY Buffalo, Neurol, Buffalo, NY 14260 USA
[5] Barnabas Hlth MS Ctr, Neurol, Livingston, NJ USA
[6] Univ Texas SW Med Ctr Dallas, Neurol, Dallas, TX 75390 USA
[7] NINDS, Bethesda, MD 20892 USA
[8] Natl Inst Allergy & Immunol, Bethesda, MD USA
[9] Univ Alabama Birmingham, Birmingham, AL USA