103PHGCSG1503: A retrospective cohort study evaluating the safety and efficacy of TAS-102 in patients with metastatic colorectal cancer: Analysis of cases of prior regorafenib. (25th November 2018) - Tsuji, Y; Yuki, S; Sawada, K; Muranaka, T; Kobayashi, Y; Okuda, H; Ogawa, K; Minami, S; Honda, T; Dazai, M; Kato, T; Sasaki, T; et al.