TY - Journal of International Oncology A1 - Wang Hongliang, Sun Yaxin, Li Jiamei, Lin Xiaoya T1 - Research progress of esophageal collision tumor Y1 - 2017-03-08 JF - Journal of International Oncology JO - Journal of International Oncology SP - 221 EP - 223 VL - 44 IS - 3 UR - https://gjzlx.sdfmu.edu.cn N1 - 10.3760/cma.j.issn.1673422X.2017.03.016 ER -