@inbook{1171281219, author={Juliane Y. Cruz and Stephen M. Sentovich}, editor={Doherty, Gerard M.}, title={Anorectum}, booktitle={Current Diagnosis & Treatment: Surgery, 15e}, publisher={McGraw Hill LLC}, address={New York, NY}, year={2020}, url={accessmedicine.mhmedical.com/content.aspx?aid=1171281219} }