@inbook{1182914690, author={Theresa A. Tacy}, editor={Kline, Mark W.}, title={Ultrasound for Pediatric Cardiac Examination}, booktitle={Rudolph's Pediatrics, 23e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2018}, url={accesspediatrics.mhmedical.com/content.aspx?aid=1182914690} }