Online decision tools for personalized survival prediction and treatment optimization in elderly patients with lung squamous cell carcinoma: a retrospective cohort study - Shao, Chen-ye; Luo, Jing; Ju, Sheng; Li, Chu-ling; Ding, Cheng; Chen, Jun; Liu, Xiao-long; Zhao, Jun; Yang, Li-qin (BMC Cancer, 2023)