@inbook{55924377, author={Hartzell V. Schaff and Rakesh M. Suri}, editor={Cohn, Lawrence H.}, title={Chapter 47. Multiple Valve Disease}, booktitle={Cardiac Surgery in the Adult, 4e}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2012}, url={accesscardiology.mhmedical.com/content.aspx?aid=55924377} }