RT Journal Article SR Electronic T1 Spontaneous intracranial hypotension, hygromata and haematomata JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 442 OP 442 DO 10.1136/jnnp.2007.132019 VO 79 IS 4 A1 D G Healy A1 P J Goadsby A1 N D Kitchen A1 T Yousry A1 M G Hanna YR 2008 UL http://jnnp.bmj.com/content/79/4/442.abstract AB