Toripalimab plus intensity-modulated radiotherapy for recurrent nasopharyngeal carcinoma: an open-label single-arm, phase II trial ================================================================================================================================== * Yijun Hua * Rui You * Zhiqiang Wang * Peiyu Huang * Mei Lin * Yanfeng Ouyang * Yulong Xie * Xiong Zou * Youping Liu * Chongyang Duan * Yonglong Liu * Chenmei Gu * Rongzeng Liu * Qi Yang * Rou Jiang * Mengxia Zhang * Xi Ding * Siyuan Chen * Chao Lin * Rui Sun * Mingyuan Chen