@inbook{8550646, author={John D. Wasnick and Zak Hillel and David Kramer and Sanford Littwin and Alina Nicoara}, title={Chapter 6. Aortic Valve Disease}, booktitle={Cardiac Anesthesia and Transesophageal Echocardiography}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2011}, url={accessanesthesiology.mhmedical.com/content.aspx?aid=8550646} }