@inbook{3415000,
author={Jonathan Kleefield},
editor={Warfield, Carol A. and Bajwa, Zahid H.},
title={Chapter 8. Radiologic Evaluation of Spinal Disease},
booktitle={Principles & Practice of Pain Medicine, 2e},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2004},
url={accessanesthesiology.mhmedical.com/content.aspx?aid=3415000}
}