[1] Int Univ Hlth & Welf, Dept Palliat Med & Gastroenterol, Narita Hosp, 852 Hatakeda, Narita 2860124, Japan
[2] Int Univ Hlth & Welf, Dept Gastroenterol, Grad Sch Med, 4-3 Kozunomori, Narita 2860048, Japan
[3] Yokohama City Univ, Grad Sch Med, Dept Gastroenterol & Hepatol, 3-9 Fukuura,Kanazawa Ku, Yokohama, Kanagawa 2360004, Japan
[4] Kanagawa Dent Univ, Dept Internal Med, Yokohama Clin, 3-31-6 Tsuruya Cho, Yokohama, Kanagawa 2210835, Japan
[5] Ishikawa Prefectural Nursing Univ, Sch Nursing, 1-1 Gakuendai, Kahoku, Ishikawa 9291210, Japan
[6] Natl Hosp Org Hakodate Natl Hosp, Dept Gastroenterol, 18-16 Kawahara Cho, Hakodate, Hokkaido 0418512, Japan
[7] Publ Interest Fdn Hokkaido Canc Soc, Sapporo Canc Screening Ctr, Dept Gastroenterol, 1-15,Kita 26 Higashi 14,Higashi Ku, Sapporo, Hokkaido 0650026, Japan
[8] Fujita Hlth Univ, Res Ctr Implementat Nursing Sci Initiat, Toyoake, Aichi 4701192, Japan
[9] Kanagawa Dent Univ, Dept Lab, Yokohama Clin, 3-31-6 Tsuruya Cho, Yokohama, Kanagawa 2210835, Japan
[10] Natl Hosp Org Hakodate Natl Hosp, Dept Clin Lab, Hakodate, Hokkaido 0418512, Japan
[11] Takano Hosp, Dept Radiol Technol, Coloproctol Ctr, Kumamoto 8620971, Japan
[12] Tokyo Med Univ Hosp, Div Ultrasound, 6-7-1 Nishishinjuku,Shinjuku Ku, Tokyo 1600023, Japan
[13] Tokyo Med Univ Hosp, Dept Diag Imaging, 6-7-1 Nishishinjuku,Shinjuku Ku, Tokyo 1600023, Japan
[14] Matsushima Hosp Proctol Ctr, Nishi Ward, 9-11 Honcho, Yokohama, Kanagawa 2200041, Japan
[15] Kawasaki Med Sch Gen Med Ctr, Dept Clin Pathol & Lab Med, Div Endoscopy & Ultrasonog, Okayama 7008505, Japan
[16] Yokohama City Univ, Grad Sch Med, Dept Nursing, Yokohama, Kanagawa 2360027, Japan