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https://www.academia.edu/106764955/Higher_latitude_is_significantly_associated_with_an_ear…

Downloaded from http://jnnp.bmj.com/ on November 30, 2016 - Published by group.bmj.com Multiple sclerosis RESEARCH PAPER Higher latitude is significantly associated with an earlier age of disease onset in multiple sclerosis Chunrong Tao,1 Steve Simpson Jr,1 Ingrid van der Mei,1 Le…