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DOI

10.1177/1352458509106209

Type

Journal article

Journal

Mult Scler

Publication Date

08/2009

Volume

15

Pages

889 - 890

Keywords

Canada, Environmental Exposure, Geography, Humans, Multiple Sclerosis, Prevalence, Residence Characteristics, Risk Assessment, Risk Factors, Seasons, Ultraviolet Rays, United States, Vitamin D Deficiency, Weather