RT Journal Article SR Electronic T1 The unsolved puzzle of multiple sclerosis and venous function JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 358 OP 358 DO 10.1136/jnnp.2008.168179 VO 80 IS 4 A1 Claude Franceschi YR 2009 UL http://jnnp.bmj.com/content/80/4/358.abstract AB