@inbook{3504091, author={Colin J. L. McCartney, MD}, editor={Hadzic, Admir}, title={Chapter 9. Analgesic Adjuvants in the Peripheral Nervous System}, 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=3504091} }