%0 Journal Article %T Serum 25-Hydroxyvitamin D Levels and Risk of Multiple Sclerosis %A Munger, Kassandra L. %A Levin, Lynn I. %A Hollis, Bruce W. %A Howard, Noel S. %A Ascherio, Alberto %J JAMA %V 296 %N 23 %P 2832-2838 %@ 0098-7484 %D 2006-12-20 %I American Medical Association %~ DeepDyve