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Pediatric-onset multiple sclerosis is now recognized, but the association with ethnicity has not been well studied. In a retrospective review at a major teaching facility, 46 pediatric-onset multiple sclerosis patients were identified; of these, 24 were African-American black and 19 were European-origin white. Both groups were similar in mean age at onset (black, 13.6 ± 3.36 years; white, 13.68 ±...