@inbook{6922178,
author={Joseph P. Mathew and Madhav Swaminathan and Chakib M. Ayoub},
title={Appendix F. Normal Doppler Echocardiographic Values for Prosthetic Aortic Valves},
booktitle={Clinical Manual and Review of Transesophageal Echocardiography, 2e},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2010},
url={accessanesthesiology.mhmedical.com/content.aspx?aid=6922178}
}