Two-stage hepatectomy aiming for the development of intrahepatic venous collaterals for multiple colorectal liver metastases oleh Harufumi Maki, Shouichi Satou, Kentaro Nakajima, Atsuki Nagao, Kazuteru Watanabe, Hitoshi Satodate, Satoshi Nara, Kaoru Furushima, Yasushi Harihara