@inbook{1161017718, author={Eugene E. Wolfel}, editor={Baliga, R. R. and Abraham, William T.}, title={Cardiopulmonary Stress Testing in Heart Failure}, booktitle={Color Atlas and Synopsis of Heart Failure}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2018}, url={accesscardiology.mhmedical.com/content.aspx?aid=1161017718} }