Safety and short-term outcomes of esophagectomy after neoadjuvant immunotherapy combined with chemotherapy or chemoradiotherapy for locally advanced esophageal squamous cell cancer: analysis of two phase-II clinical trials - Shen, Dijian; Chen, Runzhe; Wu, Qing; Ji, Yongling; Wilk, Berend J. van der; Chen, Emerson Y.; Chen, Qixun; Chen, Ming (Journal of Gastrointestinal Oncology, 2024)