@inbook{55955162, author={Jonathan S. Levine, MD and Robert Burakoff, MD, MPH}, editor={Greenberger, Norton J. and Blumberg, Richard S. and Burakoff, Robert}, title={Chapter 3. Inflammatory Bowel Disease: Medical Considerations}, booktitle={CURRENT Diagnosis & Treatment: Gastroenterology, Hepatology, & Endoscopy, 2e}, publisher={The McGraw-Hill Companies}, address={New York, NY}, year={2012}, url={accessmedicine.mhmedical.com/content.aspx?aid=55955162} }