@inbook{1209897216, author={Judith E. Tintinalli and O. John Ma and Donald M. Yealy and Garth D. Meckler and J. Stephan Stapczynski and David M. Cline and Stephen H. Thomas}, title={Preface}, 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=1209897216} }