[1] Komaki City Hosp, Komaki, Japan
[2] Nagoya Univ, Grad Sch Med, Dept Surg Gastroenterol, Nagoya, Aichi 4648601, Japan
[3] Konan Kosei Hosp, Konan, Aichi, Japan
[4] Nagoya Univ, Grad Sch Med, Nagoya, Aichi 4648601, Japan
[5] Kainan Hosp, Yayomi, Japan
[6] Aichi Canc Ctr Hosp, Okazaki, Aichi, Japan
[7] Tosei Hosp, Seto, Japan
[8] Toki City Hosp, Toki, Gifu, Japan
[9] Tajimi Prefectual Hosp, Tajimi, Japan
[10] Nakatsugawa City Hosp, Nakatsugawa, Japan
[11] Nagoya Grad Sch Med, Nagoya, Aichi, Japan
[12] Nagoya Univ Hosp, Nagoya, Aichi, Japan
[13] Aichi Med Univ, Nagakute, Aichi, Japan