Corresponding Author

Hepato-Biliary-Pancreatic Surgery Division, Department of Surgery, National Center for Global Health and Medicine, Tokyo, Japan

Correspondence

Nobuyuki Takemura, Department of Surgery, Hepato-Biliary Pancreatic Surgery Division, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo 162-8655, Japan.

Email: ntakemura@hosp.ncgm.go.jp