Recommendations for broadening eligibility criteria in esophagus cancer clinical trials: the mortality disparity of esophagus cancer as a first or second primary malignancy - Leng, Jinhang; Qiu, Hongrui; Huang, Qizhi; Zhang, Jinqiang; Zhou, Haiyu (Journal of Thoracic Disease; Vol 16, No 6 (June 30, 2024): Journal of Thoracic Disease, 2024)