title: Geographic distribution of multiple sclerosis: An update with special reference to Europe and the Mediterranean region.
mesh_terms: D003430:Cross-Sectional Studies; D005060:Europe; D005202:Asia, Eastern; D005843:Geography; D006801:Humans; D008521:Mediterranean Islands; D009103:Multiple Sclerosis / Q000453:epidemiology*; D009656:North America; D013020:South America