@inbook{1106402152,
author={Diana W. Bianchi and Timothy M. Crombleholme and Mary E. D'Alton and Fergal D. Malone},
title={47,XXY (Klinefelter Syndrome)},
booktitle={Fetology: Diagnosis and Management of the Fetal Patient, 2e},
publisher={McGraw-Hill Education},
address={New York, NY},
year={2015},
url={obgyn.mhmedical.com/content.aspx?aid=1106402152}
}