*Masahiko Nakatsui¹, Yasushi Hirano¹, Takeshi Abe¹, kazuki Hamada¹, Hideki Arima¹, Kimiko Toyota¹, Kouda Kyoji², Yoshiyuki Nishinaka³, Haku Ishida¹, Yoshiyuki Asai¹ (1. Yamaguchi University, 2. Hofu Institute of Gastroenterology, 3. Intasect Communications, Inc.)