TY - JOUR T1 - Low Back Pain JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 990 LP - 992 VL - 28 IS - 5 AU - W.G. Bradley, Jr. A2 - , Y1 - 2007/05/01 UR - http://www.ajnr.org/content/28/5/990.abstract N2 - ER -