Author/Authors :
araki, kenichiro gunma university - graduate school of medicine - department of general surgical science, division of hepatobiliary and pancreatic surgery, Gunma, Japan , harimoto, norifumi gunma university - graduate school of medicine - department of general surgical science, division of hepatobiliary and pancreatic surgery, Gunma, Japan , shirabe, ken gunma university - graduate school of medicine - department of general surgical science, division of hepatobiliary and pancreatic surgery, Gunma, Japan