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 El-Mostarchid, Brahim A1 El-Asri, Abad C. A1 Belhachmi, Adil A1 Akhaddar, Ali A1 Gazzaz, Miloudi A1 Boucetta, Mohamed YR 2008 UL http://nsj.org.sa/content/13/2/199.abstract AB