[1] Kansai Med Univ Kori Hosp, Dept Internal Med, 8-45 Korihondori, Neyagawa, Osaka 5728551, Japan
[2] Matsumoto Dent Univ, Dept Internal Med, Shiojiri, Japan
[3] Tokyo Metropolitan Komagome Hosp, Dept Internal Med, Tokyo, Japan
[4] Kansai Med Univ, Dept Gastroenterol & Hepatol, Hirakata, Osaka, Japan
[5] Tokyo Med Univ, Dept Gastroenterol & Hepatol, Tokyo, Japan
[6] Int Univ Hlth & Welf, Fukuoka Sanno Hosp, Neuroendocrine Tumor Ctr, Fukuoka, Japan
[7] Yamashita Hosp, Dept Gastroenterol, Ichinomiya, Japan
[8] Dokkyo Med Univ, Dept Gastroenterol, Sch Med, Tochigi, Tochigi, Japan
[9] Kochi Univ, Kochi Med Sch, Dept Gastroenterol & Hepatol, Nankoku, Kochi, Japan
[10] Nagoya City Univ, Dept Commun Based Med Educ, Grad Sch Med Sci, Nagoya, Aichi, Japan
[11] Yokohama City Univ, Div Gastroenterol & Hepatol, Grad Sch Med, Sch Med, Kanagawa, Japan
[12] Kobe Univ, Grad Sch Med, Dept Internal Med, Div Gastroenterol, Kobe, Hyogo, Japan
[13] Tokyo Womens Med Univ, Dept Gastroenterol, Tokyo, Japan
[14] Nagoya City Univ, Dept Gastroenterol, Grad Sch Med Sci, Nagoya, Aichi, Japan
[15] Tokyo Womens Med Univ, Dept Gastroenterol, Yachiyo Med Ctr, Yachiyo, Japan
[16] Kurashiki Cent Hosp, Dept Anatom Pathol, Kurashiki, Okayama, Japan
[17] Shinshu Univ, Dept Radiol, Sch Med, Matsumoto, Nagano, Japan
[18] Tohoku Univ, Div Gastroenterol, Grad Sch Med, Sendai, Miyagi, Japan
[19] Shinshu Univ, Dept Internal Med 1, Sch Med, Matsumoto, Nagano, Japan
[20] Shinshu Univ, Dept Gastroenterol, Sch Med, Shiojiri, Japan
[21] Kansai Med Univ, Dept Publ Hlth & Hyg, Osaka, Japan
[22] Kanazawa Univ Hosp, Dept Rheumatol, Kanazawa, Ishikawa, Japan
[23] Tohto Clin, Tokyo, Japan
[24] South Miyagi Med Ctr, Dept Gastroenterol, Ohgawara, Japan
[25] Kindai Univ, Fac Med, Dept Surg, Osakasayama, Osaka, Japan