491PImpact of delayed addition of anti-EGFR monoclonal antibodies on the outcome of first-line therapy in metastatic colorectal cancer patients: A retrospective registry-based analysis. (23rd October 2018) - Buchler, T; Fiala, O; Veskrnova, V; Chloupkova, R; Poprach, A; Kiss, I; Kopeckova, K; Dusek, L; Slavicek, L; Kohoutek, M; Finek, J; Svoboda, M; et al.