1. 552PCirculating tumor DNA by next generation sequencing as a prognostic and predictive biomarker in metastatic colorectal cancer. (23rd October 2018) Authors: Jia, N; Chang, L; Dou, X; Guan, M; Shao, Y; Li, N; Cheng, Y; Ying, H; Sun, Z; Zhou, Y; Zhao, L; Zhou, J; Bai, C Journal: Annals of oncology Issue: Volume 29(2018)Supplement 8 Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗