@inbook{1145459239, author={William W. Hay, Jr and Myron J. Levin and Robin R. Deterding and Mark J. Abzug}, title={Trisomy 18 Syndrome}, booktitle={Quick Medical Diagnosis & Treatment Pediatrics}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2017}, url={accesspediatrics.mhmedical.com/content.aspx?aid=1145459239} }