Multiple sclerosis (MS) is a demyelinating and inflammatory disease that is thought to be autoimmune in nature. MS typically affects young women ages 20 to 40 years, but late-onset MS (after age 50 years) is more prevalent than previously thought. Between 4% and 9% of patients with MS have symptoms onset after age 50 years.
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http://dx.doi.org/10.1097/01.JAA.0000443966.23610.0f | DOI Listing |
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