@inbook{1190912200, author={Alberto Pilotto and Marilisa Franceschi}, editor={Halter, Jeffrey B. and Ouslander, Joseph G. and Studenski, Stephanie and High, Kevin P. and Asthana, Sanjay and Supiano, Mark A. and Ritchie, Christine S. and Schmader, Kenneth}, title={Upper Gastrointestinal Disorders}, booktitle={Hazzard's Geriatric Medicine and Gerontology, 8e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2022}, url={accessmedicine.mhmedical.com/content.aspx?aid=1190912200} }