@inbook{57714382,
author={Eric F. Reichman},
title={Chapter 130. Ultrasound in Pregnancy},
booktitle={Emergency Medicine Procedures, 2e},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2013},
url={accessemergencymedicine.mhmedical.com/content.aspx?aid=57714382}
}