Association between delirium and neutrophil percentage-to-albumin ratio in patients with cervical spinal cord injury: A single-center, retrospective study - Kosuke Nitta; Gentaro Kumagai; Kanichiro Wada; Yohshiro Nitobe; Kotaro Aburakawa; On Takeda; Kazushige Koyama; Hirotaka Kinoshita; Tetsuya Kushikata; Kazuyoshi Hirota; Yasuyuki Ishibashi (PLoS ONE, 2026)