Poster 70
HBP 04

[P70-5] A new method of conducting accurate evaluation of the preoperative risks of hepatobiliary and pancreatic surgery on elderly patients

^○Shigeto Ochiai, Koichi Tomita, Kei Yokozuka, Takahiro Gunji, Masaaki Okihara, Toru Sano, Rina Tsutsui, Naokazu Chiba, Shigeyuki Kawachi (Department of Digestive and Transplantation Surgery, Tokyo, Japan)