Cytoreductive surgery plus hyperthermic intraperitoneal chemotherapy versus cytoreductive surgery alone for colorectal peritoneal metastases (PRODIGE 7): a multicentre, randomised, open-label, phase 3 trial - Quénet, F; Elias, D; Roca, L; UNICANCER-GI Group and BIG Renape Group (Lancet Oncol, 2021)