RT Journal Article SR Electronic T1 Bilateral caudate nucleus infarction associated with variant in circle of Willis JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 1175 OP 1175 DO 10.1136/jnnp.2006.112656 VO 78 IS 11 A1 T den Heijer A1 A Ruitenberg A1 J Bakker A1 L Hertzberger A1 H Kerkhoff YR 2007 UL http://jnnp.bmj.com/content/78/11/1175.abstract AB