@inbook{1181019782,
author={Brian Dougherty and Alex Chan},
title={Maternal weight gain and pregnancy outcomes in twin gestations},
booktitle={2 Minute Medicine},
publisher={McGraw Hill},
address={New York, NY},
year={2015},
url={accesspediatrics.mhmedical.com/updatesContent.aspx?gbosid=556756}
}