RT Journal Article SR Electronic T1 Transdural spinal cord herniation with extradural cerebrospinal fluid collection JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 482 OP 483 DO 10.1136/practneurol-2015-001159 VO 15 IS 6 A1 Liam S Carroll A1 James T H Teo YR 2015 UL http://pn.bmj.com/content/15/6/482.abstract AB