What are the clinical symptoms and physical signs for non‐small cell lung cancer before diagnosis is made? A nation‐wide multicenter 10‐year retrospective study in China oleh Pu‐Yuan Xing, Yi‐Xiang Zhu, Le Wang, Zhou‐Guang Hui, Shang‐Mei Liu, Jian‐Song Ren, Ye Zhang, Yan Song, Cheng‐Cheng Liu, Yun‐Chao Huang, Xian‐Zhen Liao, Xiao‐Jing Xing, De‐Bin Wang, Li Yang, Ling‐Bin Du, Yu‐Qin Liu, Yong‐Zhen Zhang, Yun‐Yong Liu, Dong‐Hua Wei, Kai Zhang, Ju‐Fang Shi, You‐Lin Qiao, Wan‐Qing Chen, Jun‐Ling Li, Min Dai, the LuCCRES Group