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1.文献类型治疗2.证据水平1b3.文献来源Fukuoka M, Yano S, Giaccone G, et al. MultiInstitutional Randomized Phase Ⅱ Trial of Gefitinib for Previously Treated Patients With Advanced NonSmall-Cell Lung Cancer[J]. J Clin Oncol 2003;21(12):2237-2246