Yang, Y. ., Sun, S. ., Wang, Y. ., Xiong, F. ., Xiao, Y. ., & Huang, J. (2021). Development and validation of nomograms for predicting survival of elderly patients with stage I small-cell lung cancer. Biomolecules and Biomedicine, 21(5), 632–641. https://doi.org/10.17305/bjbms.2020.5420