title: Relationship of environment, ethnicity, and migration to multiple sclerosis.
mesh_terms: D000328:Adult; D000367:Age Factors; D002140:California; D004777:Environment; D005006:Ethnicity; D006801:Humans; D007564:Japan / Q000208:ethnology; D009103:Multiple Sclerosis / Q000453:epidemiology* / Q000235:genetics; D014171:Transients and Migrants; D014861:Washington