Pembrolizumab in combination with gemcitabine and cisplatin compared with gemcitabine and cisplatin alone for patients with advanced biliary tract cancer (KEYNOTE-966): a randomised, double-blind, placebo-controlled, phase 3 trialRobin Kate Kelley, Ming‐Huang Chen, Li‐Yuan Bai et al.|The Lancet|2023Cited by 1k