@inbook{1176286443, author={Sonia M. Reyes and Jonathan Bronner}, editor={Stone, C. Keith and Humphries, Roger L.}, title={Gastrointestinal Bleeding}, booktitle={CURRENT Diagnosis & Treatment: Emergency Medicine, 8e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2017}, url={accessmedicine.mhmedical.com/content.aspx?aid=1176286443} }