Affiliation: | (1) Olympus Optical Co., Ltd., Ishikawa-cho, Hachioji-shi, Tokyo 192-8507, Japan;(2) Imaging Sciences and Engineering Laboratory, Tokyo Institute of Technology, 4259 Nagatsuda-cho, Midoriku, Yokohama-shi, Kanagawa 226-8503, Japan;(3) Frontier Collaborative Research Center, Tokyo Institute of Technology, Kanagawa 226-8503, Japan;(4) Dep. of Gastroenterology and Endoscopy, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa-shi, Chiba 277-8577, Japan;(5) First Department of Internal Medicine, Sapporo Medical University, S-1, W-16, Chuo-ku, Sapporo 060-8543, Japan |