RT Journal Article SR Electronic T1 Supplementing our understanding of vitamin D and multiple sclerosis JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 1846 OP 1847 DO 10.1212/WNL.0b013e3181e3d96c VO 74 IS 23 A1 Dean M. Wingerchuk YR 2010 UL http://n.neurology.org/content/74/23/1846.abstract AB