@inbook{1135229473, author={Robert J. Mayer}, editor={Longo, Dan L.}, title={Upper Gastrointestinal Tract Cancers}, booktitle={Harrison's Hematology and Oncology, 3e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2016}, url={accessbiomedicalscience.mhmedical.com/content.aspx?aid=1135229473} }