@inbook{1159986169, author={Terri-Ann Bennett and Christine Proudfit and Ashley S. Roman}, editor={DeCherney, Alan H. and Nathan, Lauren and Laufer, Neri and Roman, Ashley S.}, title={Normal & Abnormal Labor & Delivery}, booktitle={CURRENT Diagnosis & Treatment: Obstetrics & Gynecology, 12e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2019}, url={obgyn.mhmedical.com/content.aspx?aid=1159986169} }