TY - Journal of International Oncology A1 - T1 - Y1 - 2019-04-08 JF - Journal of International Oncology JO - Journal of International Oncology SP - 253 EP - 254 VL - 46 IS - 4 UR - https://gjzlx.sdfmu.edu.cn N1 - 10.3760/cma.j.issn.1673-422X.2019.04.013 ER -