@inbook{56965770,
author={Ann-Marie Surette, MD and Samantha M. Dunham, MD},
editor={DeCherney, Alan H. and Nathan, Lauren and Laufer, Neri and Roman, Ashley S.},
title={Chapter 13. Early Pregnancy Risks},
booktitle={CURRENT Diagnosis & Treatment: Obstetrics & Gynecology, 11e},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2013},
url={obgyn.mhmedical.com/content.aspx?aid=56965770}
}