First‐line nivolumab plus chemotherapy vs chemotherapy in patients with advanced gastric, gastroesophageal junction and esophageal adenocarcinoma: <scp>CheckMate</scp> 649 Chinese subgroup analysis

Sun Yat-sen University, Fudan University, Zhongshan Hospital, The First Affiliated Hospital, Sun Yat-sen University, Heilongjiang University, Fujian Medical University, Union Hospital, Jilin University, First Hospital of Jilin University, Zhengzhou University, Henan Cancer Hospital, Qingdao University, Affiliated Hospital of Qingdao University, Sir Run Run Shaw Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Peking Union Medical College Hospital, Chinese PLA General Hospital, Beijing Aerospace General Hospital, Jilin Province Tumor Hospital, Liaoning Cancer Hospital & Institute, Zhejiang Cancer Hospital, Tianjin Medical University Cancer Institute and Hospital, The First People's Hospital of Changzhou, Sun Yat-sen University Cancer Center, Fudan University Shanghai Cancer Center, Eastern Medical College and Hospital, Hunan Cancer Hospital, Jiangsu Cancer Hospital, National Cancer Center Hospital East, Bristol-Myers Squibb (United States), Peking University, Peking University Cancer Hospital, Ministry of Education