@inbook{3509506, author={Brian A. Williams, MD, MBA}, editor={Hadzic, Admir}, title={Chapter 74. Pharmacoeconomics of Regional Anesthesia: Implications in Ambulatory Orthopedic Surgery, Hospital Admission, & Early Rehabilitation}, 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=3509506} }