Clinical Outcomes of Cetuximab and Paclitaxel after Progression on Immune Checkpoint Inhibitors in Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma oleh Shinsuke Suzuki, Satoshi Toyoma, Yohei Kawasaki, Koh Koizumi, Nobuko Iikawa, Kazuhiro Shiina, Tentaro Endo, Tomoe Abe, Teppei Kouga, Takechiyo Yamada