1. Multiple sclerosis: severity and progression rate in African Americans compared with whites;Kaufman;Am J Phys Med Rehabil,2003
2. Kurtzke JF, Wallin MT. Epidemiology. In: Burks J, Johnson K, editors. Multiple sclerosis: diagnosis, medical management, and rehabilitation. New York: DEMOS. 2000. p. 49–71.
3. Plaque-associated expression of human herpesvirus 6 in multiple sclerosis;Challoner;Proc Natl Acad Sci USA,1995
4. The search for virus in multiple sclerosis brain;Gilden;Mult Scl,1996
5. CNS infection with C. Pneumoniae in MS;Yao;Neurology,1998