論文（英文）
Shiga M, Maeda H, Oba K, Okamoto K, Namikawa T, Fujisawa K, Yokota K, Kobayashi M, Hanazaki K. Safety of laparoscopic surgery for colorectal cancer in patients over 80 years old: a propensity score matching study. Surg Today. 2017 Jan 27. [Epub ahead of print]
Shiga M, Maeda H, Oba K, Okamoto K, Namikawa T, Fujisawa K, Yokota K, Kobayashi M, Hanazaki K. Safety of laparoscopic surgery for colorectal cancer in patients over 80 years old: a propensity score matching study. Surg Today. 2017 Jan 27. [Epub ahead of print]