Randomised Controlled Trial of Pringle Maneouvre versus Portal Vein Clamping in Patients undergoing Liver Resection for Colorectal Liver Metastasis – A Pilot Study. (2019) - Hakeem, Abdul; Pathak, Samir; Brown, Sarah; Moriarty, Catherine; Longo, Roberta; Lodge, Peter; Toogood, Giles; Hidalgo, Ernest; Prasad, Raj