@inbook{1127273150,
author={E. Christopher Ellison and Robert M. Zollinger, Jr.},
title={PERIRECTAL ABSCESS, FISTULA-IN-ANO, AND ANAL FISSURE},
booktitle={Zollinger's Atlas of Surgical Operations, 10e},
publisher={McGraw-Hill Education},
address={New York, NY},
year={2016},
url={accesssurgery.mhmedical.com/content.aspx?aid=1127273150}
}