TY - Journal of International Oncology A1 - Xu Chao, Bao Yun, Zhou Juying, Tu Yu T1 - Meta analysis of lymph node metastasis pattern of nasopharyngeal carcinoma Y1 - 2015-02-08 JF - Journal of International Oncology JO - Journal of International Oncology SP - 109 EP - 114 VL - 42 IS - 2 UR - https://gjzlx.sdfmu.edu.cn N1 - 10.3760/cma.j.issn.1673-422X.2015.02.008 ER -