@inbook{1184737796, author={Muhammad Saad and Timothy J. Vittorio}, title={Agradecimientos}, booktitle={COVID-19 y cardiopatías: Una guía basada en casos clínicos}, publisher={McGraw Hill}, address={New York, NY}, year={2021}, url={accessmedicina.mhmedical.com/content.aspx?aid=1184737796} }