Pembrolizumab plus trastuzumab and chemotherapy for HER2-positive gastric or gastro-oesophageal junction adenocarcinoma: interim analyses from the phase 3 KEYNOTE-811 randomised placebo-controlled trialYelena Y. Janjigian, Sun Young Rha, Kohei Shitara et al.|The Lancet|2023Cited by 461