@inbook{3506188, author={Bernadette Veering, MD, PhD}, editor={Hadzic, Admir}, title={Chapter 56. Regional Anesthesia in the Elderly}, 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=3506188} }