1. Porter RW. Spinal surgery and alleged medical negligence.J R Coll Surg Edinb1997; 42:376–380
2. Bailey W, Carter RA. Anomalies of the spine: a correlation of anatomical, roentgenological, and clinical findings.Cal West Med1938; 49:46 –52
3. Hahn PY, Strobel JJ, Hahn FJ. Verification of lumbosacral segments on MR images: identification of transitional vertebrae.Radiology1992; 182:580–581
4. Automated Spine Survey Iterative Scan Technique
5. Bergman RA, Thompson SA, Afifi AK.Compendium of human anatomic variation: text, atlas, and world literature. Baltimore, MD: Urban & Schwarzenberg, 1988