@inbook{56967022, author={Melissa C. Bush, MD and Martin L. Pernoll, MD}, editor={DeCherney, Alan H. and Nathan, Lauren and Laufer, Neri and Roman, Ashley S.}, title={Chapter 17. Multiple Gestation}, booktitle={CURRENT Diagnosis & Treatment: Obstetrics & Gynecology, 11e}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2013}, url={accessmedicine.mhmedical.com/content.aspx?aid=56967022} }