RT Journal Article SR Electronic T1 Ossification of the Posterior Longitudinal Ligament JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 1068 OP 1070 VO 13 IS 4 A1 Tom E. Reinsel A1 Gunnar B. J. Andersson YR 1992 UL http://www.ajnr.org/content/13/4/1068.abstract AB