Sasaki Yoshihiro, Mikami Tatsuya, Sawaya Manabu, Ishiguro Yoh, Tsuji Tsuyotoshi, Fukuda Shinsaku, Munakata Akihiro, Morita Takayuki, Hada Ryukichi
First Department of Internal Medicine, Hirosaki University School of Medicine, Hirosaki, Japan.
Gastrointest Endosc. 2004 Apr;59(4):589-92. doi: 10.1016/s0016-5107(04)00014-8.