@inbook{1106704245,
author={Arthur C. Fleischer and Michael P. Diamond and Peter S. Cartwright and Melinda New},
editor={Fleischer, Arthur C. and Toy, Eugene C. and Lee, Wesley and Manning, Frank A. and Romero, Roberto J.},
title={TRANSVAGINAL SONOGRAPHY OF ECTOPIC PREGNANCY},
booktitle={Sonography in Obstetrics and Gynecology: Principles & Practice, 7e},
publisher={McGraw-Hill Education},
address={New York, NY},
year={2015},
url={obgyn.mhmedical.com/content.aspx?aid=1106704245}
}