@inbook{56302387, author={Michael Osborne}, editor={Carmody, Kristin A. and Moore, Christopher L. and Feller-Kopman, David}, title={Chapter 27. Approach to the Patient with Undifferentiated Abdominal Pain}, booktitle={Handbook of Critical Care and Emergency Ultrasound}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2011}, url={accessanesthesiology.mhmedical.com/content.aspx?aid=56302387} }