@inbook{3499051,
author={Daniel T. Warren, MD and Spencer S. Liu, MD},
editor={Hadzic, Admir},
title={Chapter 8. Analgesic Adjuvants in Neuraxial Anesthesia},
booktitle={NYSORA Textbook of Regional Anesthesia and Acute Pain Management},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2007},
url={accessanesthesiology.mhmedical.com/content.aspx?aid=3499051}
}