The epidemiology of multiple sclerosis in Devon: a comparison of the new and old classification criteria.


OBJECTIVES To determine the prevalence of multiple sclerosis in Devon and compare the new McDonald classification guidelines with the Poser criteria currently used. METHODS All patients known to have multiple sclerosis and alive and resident within the chosen area on 1 June 2001 were included in the study. Seven sources of case ascertainment were used and… (More)

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