Development and validation of an administrative data algorithm to estimate the disease burden and epidemiology of multiple sclerosis in Ontario, Canada. Widdifield J, Ivers NM, Young J, Green D, Jaakkimainen L, Butt DA, O'Connor P, Hollands S, Tu K Mult Scler. 2014 Nov 12. PMID: 25392338. Abstract CommentRecommendBookmarkWatch