@inbook{1119284198,
author={Judith E. Tintinalli and J. Stephan Stapczynski and O. John Ma and David M. Cline and Garth D. Meckler and Rita K. Cydulka},
title={Prefacio},
booktitle={Tintinalli. Medicina de urgencias, 7e},
publisher={McGraw-Hill Education},
address={New York, NY},
year={2013},
url={accessmedicina.mhmedical.com/content.aspx?aid=1119284198}
}