13.
伴有与不伴有外周血微转移肺癌病人术后生存曲线（Kaplan-Meier曲线）（对数秩和检验，P < 0.05）
Kaplan-Meier survival curves between the patients with micrometastasis and without micrometastasis in peripheral blood (Log-rank test, P < 0.05)
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