@inbook{1162744145,
author={Shivani Patel and Scott Roberts and Vanessa Rogers and Ashley Zink and Elaine Duryea and Jamie Morgan},
title={Overview of Obstetrics},
booktitle={Williams Obstetrics Study Guide, 25th Edition},
publisher={McGraw-Hill Education},
address={New York, NY},
year={2019},
url={accessmedicine.mhmedical.com/content.aspx?aid=1162744145}
}