Open versus laparoscopic liver resection for colorectal liver metastases located in the postero-superior segments: a sub-group analysis from the Oslo-CoMet trial. (March 2018) - Aghayan, D.L.; Fretland, Å.A.; Kazaryan, A.M.; Sahakyan, M.A.; Røsok, B.I.; Bjørnbeth, B.A.; Edwin, B.