Incidence and risk factors for postoperative delirium after major head and neck cancer surgery

Eisuke Bouoka, Tomoyuki Kamijo, Teruaki Matsumoto, Mari Takeuchi, Takashi Kitani, Masato Nagaoka, Atsushi Imai, Yoshiyuki Iida, Ayako Shimada, Katsushi Takebayashi, Masahiro Niihara, Keita Mori, Tetsuro Onitsuka, Yasuhiro Tsubosa, Hiroya Takeuchi, Yuko Kitagawa