@inbook{1170883214, author={Marco Ettore Allaix and Alessandro Fichera}, editor={Doherty, Gerard M.}, title={Small Intestine}, booktitle={Current Diagnosis & Treatment: Surgery, 15e}, publisher={McGraw Hill}, address={New York, NY}, year={2020}, url={accessmedicine.mhmedical.com/content.aspx?aid=1170883214} }