Cognitive impairment occurs in children and adolescents with multiple sclerosis: results from a United States network.

Julian L, Serafin D, Charvet L, Ackerson J, Benedict R, Braaten E, Brown T, O'Donnell E, Parrish J, Preston T, Zaccariello M, Belman A, Chitnis T, Gorman M, Ness J, Patterson M, Rodriguez M, Waubant E, Weinstock-Guttman B, Yeh A, Krupp LB, Network of Pediatric MS Centers of Excellence