Is time to recosinder upfront surgery in case of multiple liver metastases? A weighted comparison in the era of parenchyma-sparing surgery. (2021) - Milana, F.; Famularo, S.; Cimino, M.; Corleone, P.; Branciforte, B.; Franchi, E.; Galvanin, J.; Procopio, F.; Donadon, M.; Del Fabbro, D.; Torzilli, G.