RT Journal Article SR Electronic T1 Posterior epidural migration of a sequestrated lumbar disc fragment JF Neurosciences Journal JO Neurosciences (Riyadh) FD Prince Sultan Military Medical City SP 199 OP 200 VO 13 IS 2 A1 Brahim El-Mostarchid A1 Abad C. El-Asri A1 Adil Belhachmi A1 Ali Akhaddar A1 Miloudi Gazzaz A1 Mohamed Boucetta YR 2008 UL http://nsj.org.sa/content/13/2/199.abstract AB