@inbook{1166525666, author={C. Crawford Mechem}, editor={Tintinalli, Judith E. and Ma, O. John and Yealy, Donald M. and Meckler, Garth D. and Stapczynski, J. Stephan and Cline, David M. and Thomas, Stephen H.}, title={Emergency Medical Services}, booktitle={Tintinalli's Emergency Medicine: A Comprehensive Study Guide, 9e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2020}, url={accessemergencymedicine.mhmedical.com/content.aspx?aid=1166525666} }