@inbook{55956732, author={Arun Chaudhury, MD and Hiroshi Mashimo, MD, PhD}, editor={Greenberger, Norton J. and Blumberg, Richard S. and Burakoff, Robert}, title={Chapter 13. Oropharyngeal & Esophageal Motility Disorders}, 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=55956732} }