@inbook{1175882396,
author={Donald V. Byars and Barry J. Knapp and Kean O. Feyzeau},
editor={Ma, O. John and Mateer, James R. and Reardon, Robert F. and Byars, Donald V. and Knapp, Barry J. and Laudenbach, Andrew P.},
title={Second and Third Trimester Pregnancy},
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=1175882396}
}