@inbook{1137609836, author={Norton J. Greenberger}, editor={McKean, Sylvia C. and Ross, John J. and Dressler, Daniel D. and Scheurer, Danielle B.}, title={Acute Abdominal Pain}, booktitle={Principles and Practice of Hospital Medicine, 2e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2017}, url={accessmedicine.mhmedical.com/content.aspx?aid=1137609836} }