@inbook{57013928,
author={Fabrizio Michelassi and Roger D. Hurst and Alessandro Fichera},
editor={Zinner, Michael J. and Ashley, Stanley W.},
title={Chapter 33. Crohn's Disease},
booktitle={Maingot's Abdominal Operations, 12e},
publisher={The McGraw-Hill Companies},
address={New York, NY},
year={2013},
url={accesssurgery.mhmedical.com/content.aspx?aid=57013928}
}