@inbook{3497585, author={Tony Tsai, MD and Roy Greengrass, MD}, editor={Hadzic, Admir}, title={Chapter 13. Spinal 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=3497585} }