@inbook{1153493537, author={Rita K. Cydulka and Michael T. Fitch and Scott A. Joing and Vincent J. Wang and David M. Cline and O. John Ma}, title={Prefacio}, booktitle={Manual de Urgencias Médicas de Tintinalli, 8e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2018}, url={accessmedicina.mhmedical.com/content.aspx?aid=1153493537} }