TY - Journal of International Oncology A1 - Zheng Zhen, Zhu Zhaofeng T1 - Application of endoscopic ultrasonography in the diagnosis of early esophageal cancer Y1 - 2021-03-08 JF - Journal of International Oncology JO - Journal of International Oncology SP - 176 EP - 179 VL - 48 IS - 3 UR - https://gjzlx.sdfmu.edu.cn N1 - 10.3760/cma.j.cn371439-20200630-00035 ER -