Epidemiology of multiple sclerosis: critique of the evidence for a viral etiology.
D000293:Adolescent; D000328:Adult; D000349:Africa / Q000208:ethnology; D000368:Aged; D001208:Asia / Q000208:ethnology; D002648:Child; D002675:Child, Preschool; D005060:Europe / Q000208:ethnology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007557:Israel; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000453:epidemiology* / Q000209:etiology; D012959:Socioeconomic Factors; D014171:Transients and Migrants