3Ozawa H, Kanno H, Koizumi Y, et al. Dynamic changes in the dural sac cross-sectional area on axial loaded MR imaging: is there a difference between degenerative spondylolisthesis and spinal stenosis. AJNR Am J Neuroradiol. 2012.33 (6) : 1191-1197.
4Kasliwal MK, Smith JS, Shaffrey CI, et al. Short-term complications associated with surgery for high-grade spondylolisthesis in adults and pediatric patients: a report from the scoliosis research society morbidity and mortality database. Neurosurgery, 2012, 71 ( 1 ) :109-116.