The role of immune checkpoint inhibitors in the first-line treatment for patients with advanced biliary tract cancer: a systematic review and meta-analysis of randomized trials. - Vitale E; Rizzo A; Maistrello L; Nardulli P; Talienti T; Quaresmini D; De Summa S; Massafra R; Silvestris N; Brunetti O (Frontiers in oncology, 2024)