Month of birth as a latitude-dependent risk factor for multiple sclerosis in Norway. Grytten N, Torkildsen O, Aarseth J H, Benjaminsen E, Celius E G, Dahl O P, Holmøy T, Løken-Amsrud K, Midgard R, Myhr K-M, et al. Mult Scler. 2012 Dec 20. PMID: 23257620. Abstract CommentRecommendBookmarkWatch