@inbook{1104595375, author={Tain-Yen Hsia and Jeffrey J. Wu and Richard Ringel}, editor={Yuh, David D. and Vricella, Luca A. and Yang, Stephen C. and Doty, John R.}, title={Patent Ductus Arteriosus}, booktitle={Johns Hopkins Textbook of Cardiothoracic Surgery}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2014}, url={accesssurgery.mhmedical.com/content.aspx?aid=1104595375} }