title: Editorial regarding "Explaining multiple sclerosis prevalence by ultraviolet exposure: a geospatial analysis," by Beretich and Beretich.
authors: G C
authors: GC
authors: Ebers
mesh_terms: D002170:Canada / Q000453:epidemiology; D004781:Environmental Exposure; D005843:Geography; D006801:Humans; D009103:Multiple Sclerosis / Q000453:epidemiology* / Q000209:etiology; D015995:Prevalence; D012111:Residence Characteristics; D018570:Risk Assessment; D012307:Risk Factors; D012621:Seasons; D014466:Ultraviolet Rays; D014481:United States / Q000453:epidemiology; D014808:Vitamin D Deficiency / Q000150:complications / Q000453:epidemiology; D014887:Weather