[1] Kurume Univ, Sch Med, Div Gastroenterol, Dept Med, Kurume, Fukuoka 8300011, Japan
[2] Fukuoka Univ, Sch Med, Dept Gastroenterol & Med, Fukuoka 81401, Japan
[3] Kyushu Med Ctr Natl Hosp Org, Dept Gastroenterol, Fukuoka, Japan
[4] Fukuoka Red Cross Hosp, Div Hepatol, Fukuoka, Japan
[5] Nagata Hosp, Fukuoka, Japan
[6] NTT W Kyusyu Hosp, Dept Gastroenterol & Hepatol, Kumamoto, Japan
[7] Saga Med Sch, Dept Internal Med, Saga, Japan
[8] Kagoshima Kouseiren Hosp, Kagoshima, Japan
[9] Kirishima Med Ctr, Kagoshima, Japan
[10] Nanpuh Hosp, Kagoshima, Japan
[11] Kagoshima Univ, Grad Sch Med & Dent Sci, Dept Digest & Life Style Related Dis, Kagoshima 890, Japan