Predictive impact of C-reactive protein to albumin ratio for recurrent or metastatic head and neck squamous cell carcinoma receiving nivolumab oleh Kenro Tanoue, Shingo Tamura, Hitoshi Kusaba, Yudai Shinohara, Mamoru Ito, Kenji Tsuchihashi, Tsuyoshi Shirakawa, Taiga Otsuka, Hirofumi Ohmura, Taichi Isobe, Hiroshi Ariyama, Sakuya Koreishi, Yuzo Matsushita, Hozumi Shimokawa, Risa Tanaka, Kenji Mitsugi, Koichi Akashi, Eishi Baba