@inbook{1127701902, author={F. Charles Brunicardi and Dana K. Andersen and Timothy R. Billiar and David L. Dunn and John G. Hunter and Jeffrey B. Matthews and Raphael E. Pollock and James X. Wu}, title={Colon, Rectum, and Anus}, booktitle={Schwartz's Principles of Surgery: ABSITE and Board Review, 10e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2016}, url={accesssurgery.mhmedical.com/content.aspx?aid=1127701902} }