Prognostic impact of neutrophil-to-lymphocyte ratio (NLR) in patients with unresectable biliary tract cancer treated with gemcitabine, cisplatin, and durvalumab. - Mii, Satoshi; Kato, Hiroyuki; Takahara, Takeshi; Kojima, Masayuki; Kato, Yutaro; Morise, Zenichi; Horiguchi, Akihiko; Suda, Koichi (World Journal of Surgical Oncology, 2025)