@inbook{1148443241, author={Kenneth R. McQuaid}, editor={Katzung, Bertram G.}, title={Drugs Used in the Treatment of Gastrointestinal Diseases}, booktitle={Basic & Clinical Pharmacology, 14e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2017}, url={accessmedicine.mhmedical.com/content.aspx?aid=1148443241} }