A Nomogram for Predicting Cancer‐Specific Survival in Young Patients With Advanced Lung Cancer Based on Competing Risk Model oleh Jiaxin Li, Bolin Pan, Qiying Huang, Chulan Zhan, Tong Lin, Yangzhi Qiu, Honglang Zhang, Xiaohong Xie, Xinqin Lin, Ming Liu, Liqiang Wang, Chengzhi Zhou