@inbook{1115521405, author={Mary B. Munn}, editor={Pacheco, Luis D. and Saade, George R. and Hankins, Gary D.V.}, title={Diagnostic Imaging in Pregnancy}, booktitle={Maternal Medicine}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2015}, url={obgyn.mhmedical.com/content.aspx?aid=1115521405} }