Phase 1 dose-escalation study of apatinib and irinotecan in esophageal squamous cell carcinoma patients - Jia, Jun; Yu, Jing; Sun, Zhiwei; Yang, Ying; Liu, Chuanling; Xiao, Yanjie; Zhang, Xiaodong (Translational Cancer Research; Vol 10, No 2 (February 26, 2021): Translational Cancer Research, 2021)