Multiple sclerosis, two high risk areas in northern Ireland.
D000293:Adolescent; D000328:Adult; D004777:Environment; D005260:Female; D006801:Humans; D008297:Male; D009103:Multiple Sclerosis / Q000453:epidemiology* / Q000209:etiology* / Q000235:genetics; D009660:Northern Ireland; D013223:Statistics as Topic