@inbook{3421175,
author={Prithvi P. Raj and Sara D. Sangha},
editor={Warfield, Carol A. and Bajwa, Zahid H.},
title={Chapter 70. Use of Botulinum Toxin in Pain Management},
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=3421175}
}