Association of metabolomics with PD-1 inhibitor plus chemotherapy outcomes in patients with advanced non-small-cell lung cancer =============================================================================================================================== * Liang Zheng * Fang Hu * Lin Huang * Jun Lu * Xiaohua Yang * Jianlin Xu * Shuyuan Wang * Yinchen Shen * Runbo Zhong * Tianqing Chu * Wei Zhang * Ying Li * Xiaoxuan Zheng * Baohui Han * Hua Zhong * Wei Nie * Xueyan Zhang