[1] Third Department of Surgery,
[2] Nihon University School of Medicine,undefined
[3] 30-1 Oyaguchikamimachi,undefined
[4] Itabashi-ku,undefined
[5] Tokyo 173-8610,undefined
[6] Japan,undefined
[7] Division of Surgery,undefined
[8] Niigata Cancer Center Hospital,undefined
[9] Niigata,undefined
[10] Japan,undefined
[11] Department of Gastrointestinal Surgery,undefined
[12] Cancer Institute Hospital,undefined
[13] Tokyo,undefined
[14] Japan,undefined