Cognitive Function in People With Pediatric Multiple Sclerosis Over 2 Years.

O'Neill KA, Charvet L, Waltz M, George A, Benson LA, Gorman MP, Mar SS, Ness JM, Schreiner T, Waubant E, Weinstock-Guttman B, Wheeler YS, Abrams AW, Chitnis T, Rodriguez M, Rose JW, Tillema JM, Virupakshaiah A, Casper TC, Krupp LB, US Network of Pediatric MS Centers