Development and validation of nomograms based on pre-/post-operative CEA and CA19-9 for survival predicting in stage I-III colorectal cancer patients after radical resection - Dai, Xuan; Li, Yifan; Wang, Haoran; Dai, Zhujiang; Chen, Yuanyuan; Liu, Yun; Huang, Shiyong (Frontiers in Oncology, 2024)