Kume K, Yamasaki M, Kanda K, Yoshikawa I, Otsuki M
Third Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyusyu, Japan.
Endoscopy. 2007 Feb;39 Suppl 1:E144. doi: 10.1055/s-2006-925320. Epub 2007 Jul 4.