25-hydroxyvitamin D levels are associated with multiple sclerosis in Iran: A cross-sectional study. Karampoor S, Zahednasab H, Ramagopalan S, Mehrpour M, Safarnejad Tameshkel F, Keyvani H J Neuroimmunol. 2016 Jan 15; 290:47-8. Epub 2015 Nov 29. PMID: 26711568. Abstract CommentRecommendBookmarkWatch