PT - JOURNAL ARTICLE AU - Williams, Guy H. TI - Multiple sclerosis—an enigma DP - 1967 Jan 01 TA - Cleveland Clinic Journal of Medicine PG - 1--7 VI - 34 IP - 1 4099 - http://www.ccjm.org/content/34/1/1.short 4100 - http://www.ccjm.org/content/34/1/1.full SO - Cleve Clin J Med1967 Jan 01; 34