Tang Shou-jiang, Tang Linda, Chen Edward, Myers Larry L
Division of Digestive and Liver Diseases, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390-9151, USA.
Gastrointest Endosc. 2008 Oct;68(4):790-3. doi: 10.1016/j.gie.2008.01.005. Epub 2008 Apr 9.