TY - JOUR T1 - Back Surgery Begets Back Surgery JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 354 LP - 355 VL - 25 IS - 3 AU - F. Reed Murtagh Y1 - 2004/03/01 UR - http://www.ajnr.org/content/25/3/354.abstract N2 - ER -