Combining interleukin 6 and EBV DNA levels predicts survival outcomes for patients with recurrent or metastatic nasopharyngeal carcinoma receiving chemoimmunotherapy - Liu, Ya; Huang, Zilu; Chen, Chen; Hu, Yujun; Tao, Yalan; Liu, Songran; Feng, Ping; Zheng, Shuohan; Xia, Yunfei (Frontiers in Immunology, 2025)