Pungpapong Surakit, Steers Jeffrey L, Wallace Michael B, Krishna Murli, Keaveny Andrew P
Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Jacksonville, Florida, USA.
Gastrointest Endosc. 2006 Jul;64(1):124-5. doi: 10.1016/j.gie.2006.01.033.