1 Department of Gastroenterological Surgery, New Tokyo Hospital, Matsudo, Chiba, Japan; Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-ku, Tokyo, Japan.
2 Department of Gastroenterological Surgery, New Tokyo Hospital, Matsudo, Chiba, Japan; Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-ku, Tokyo, Japan. Electronic address: [email protected].
3 Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center, Komagome Hospital, Bunkyo-ku, Tokyo, Japan.