Neurology · 2011 · 137 citations · 29 references
The findings suggest that regional UVB radiation is predictive of corresponding MS prevalence rates and supports the hypothesis that sunlight exposure influences MS risk. The evidence also supports a potential role for gender-specific effects of UVB exposure.
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Sex ratio of multiple sclerosis in Canada: a longitudinal study
Sarah Orton, Blanca Herrera, Irene M. Yee et al. · The Lancet Neurology · 2006 · 924 citations
Timing of birth and risk of multiple sclerosis: population based study
Cristen J. Willer, D. A. Dyment, A. Dessa Sadovnick et al. · BMJ · 2004 · 449 citations · Full text