[1] Shizuoka Canc Ctr Hosp, Div Esophageal Surg, Nagaizumi, Shizuoka 4118777, Japan
[2] Keio Univ, Sch Med, Dept Surg, Tokyo 160, Japan
[3] Shizuoka Canc Ctr Hosp, Div Head & Neck Surg, Nagaizumi, Shizuoka 4118777, Japan
[4] Shizuoka Canc Ctr Hosp, Div Plast & Reconstruct Surg, Nagaizumi, Shizuoka 4118777, Japan
[5] Saitama Med Univ, Int Med Ctr, Dept Esophagogastr Surg, Saitama, Japan