The characteristics of included trials.
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Abbreviations: RCT: Randomized controlled trial; TT: Transthoracic resection; Non-TT: Non-Transthoracic resection; NR: Not reported; NS: No significant; OS: Overall survival; DFS: Disease-free survival.a1, age; 2, gender; 3, tumor size; 4, tumor location; 5, comorbidity; 6, depth of tumor invasion; 7, lymph node metastasis; 8, distant metastasis; 9, stage; 10, differentiation; 11, curative degree.
创建时间：
2015-12-02
