@inbook{1190913057, author={Ryan D. Nipp and Nadine J. McCleary}, 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={Gastrointestinal Malignancies}, 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=1190913057} }