RT Journal Article SR Electronic T1 Influence of surgical procedures on the course of multiple sclerosis JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 81 OP 81 DO 10.1212/WNL.11.1.81 VO 11 IS 1 A1 Ridley, Alan A1 Schapira, Kurt YR 1961 UL http://n.neurology.org/content/11/1/81.abstract AB