RT Journal Article SR Electronic T1 External ventricular drain-related infections: dilemmas of definitions, generalisability and associations versus causations JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP jnnp-2017-317105 DO 10.1136/jnnp-2017-317105 A1 Issam A Awad YR 2017 UL http://jnnp.bmj.com/content/early/2017/10/25/jnnp-2017-317105.abstract AB