Weilert Frank, Shah Janak N, Marson Fernando P, Binmoeller Kenneth F
Interventional Endoscopy Services, California Pacific Medical Center, San Francisco, California, USA.
Gastrointest Endosc. 2012 Oct;76(4):915-6. doi: 10.1016/j.gie.2011.09.027. Epub 2011 Dec 15.