[1] Shinshu Univ, Dept Med, Div Gastroenterol & Hepatol, Sch Med, 3-1-1 Asahi, Matsumoto, Nagano 3908621, Japan
[2] Shinshu Univ Hosp, Consultat Ctr Hepat Dis, 3-1-1 Asahi, Matsumoto, Nagano 3908621, Japan
[3] Japanese Red Cross Soc Nagano Hosp, Dept Gastroenterol, 22-1 Wakasato, Nagano, Nagano 3800928, Japan
[4] Natl Hosp Org, Shinshu Ueda Med Ctr, Dept Gastroenterol, 27-21 Midorigaoka, Ueda, Nagano 3868610, Japan
[5] Natl Hosp Org, Matsumoto Med Ctr, Dept Gastroenterol, 20-30 Muraimachiminami, Matsumoto, Nagano 3998701, Japan
[6] Nagano Prefectural Kiso Hosp, Dept Internal Med, 6613-4 Fukushima, Kiso, Nagano 3978555, Japan
[7] Ina Cent Hosp, Dept Gastroenterol, 1313-1 Koshiroukubo, Ina, Nagano 3968555, Japan
[8] Japanese Red Cross Soc Suwa Hosp, Dept Gastroenterol, 5-11-50 Kogandori, Suwa, Nagano 3928510, Japan
[9] Nagano Chuo Hosp, Dept Gastroenterol, 1570 Tsuruga Nishitsurugamachi, Nagano, Nagano 3800814, Japan
[10] Chikuma Cent Hosp, Dept Gastroenterol, 58 Kuiseshita, Chikuma, Nagano 3870011, Japan
[11] Japanese Red Cross Soc Azumino Hosp, Dept Gastroenterol, 5685 Toyoshina, Azumino, Nagano 3998205, Japan
[12] Aki Naika Clin, 236-1 Nozawa, Saku, Nagano 3850053, Japan
[13] Kawanakajima Clin, 1942-25 Kawanagajima Machi, Nagano, Nagano 3812221, Japan
[14] Gibo Hepatol Clin, 1-34-20 Muraimachiminami, Matsumoto, Nagano 3990036, Japan
[15] Kenwakai Hosp, Dept Gastroenterol, 1936 Kanaenakadaira, Iida, Nagano 3958522, Japan
[16] Kanebako Internal Med Clin, 320-2 Kanebako, Nagano, Nagano 3810007, Japan
[17] Nakano Gastroenterol Clin, 4-13-5 Muraimachiminami, Matsumoto, Nagano 3990036, Japan
[18] Aizawa Hosp, Gastroenterol Ctr, 2-5-1 Honjo, Matsumoto, Nagano 3900814, Japan
[19] Shinshu Univ, Dept Community Med Promot, 3-1-1 Asahi, Matsumoto, Nagano 3908621, Japan
[20] Shinshu Univ, Inst Biomed Sci, Dept Life Innovat, 3-1-1 Asahi, Matsumoto, Nagano 3908621, Japan