@inbook{1176292123, author={Scott McAninch and Clinton C. Smithson III}, editor={Stone, C. Keith and Humphries, Roger L.}, title={Gastrointestinal Emergencies}, booktitle={CURRENT Diagnosis & Treatment: Emergency Medicine, 8e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2017}, url={accessemergencymedicine.mhmedical.com/content.aspx?aid=1176292123} }