@inbook{1175574330, author={O. John Ma and James R. Mateer and Robert F. Reardon and Donald V. Byars and Barry J. Knapp and Andrew P. Laudenbach}, title={List of Abbreviations}, booktitle={Ma and Mateer's Emergency Ultrasound, 4e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2021}, url={accessemergencymedicine.mhmedical.com/content.aspx?aid=1175574330} }