RT Journal Article SR Electronic A1 Buckley, Rita T1 Extracranial Venous Pathology May Play an Important Role in Developing MS JF MD Conference Express YR 2012 FD SAGE Publications VO 12 IS 2 SP 9 OP 9 DO 10.1177/155989771202007 UL http://mdc.sagepub.com/content/12/2/9.2.abstract AB This article discusses a poster on a clinical trial to highlight the occurrence and effects of obstructions in the extracranial venous system.