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在中国,肺癌的发病率及死亡率均居各恶性肿瘤的首位[1],多数病人在明确诊断时已经为疾病晚期。因此,寻找一种有效的肺癌早期诊断方法是提高肺癌生存
In China, the incidence of lung cancer and mortality rank first in all malignancies [1], most of the patients already diagnosed at the advanced stage of disease. Therefore, looking for an effective method for the early diagnosis of lung cancer is to improve the survival of lung cancer