@inbook{1119318380, author={C. Crawford Mechem}, editor={Tintinalli, Judith E. and Stapczynski, J. Stephan and Ma, O. John and Cline, David M. and Meckler, Garth D. and Cydulka, Rita K.}, title={Servicios médicos de urgencia}, booktitle={Tintinalli. Medicina de urgencias, 7e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2013}, url={accessmedicina.mhmedical.com/content.aspx?aid=1119318380} }