吸烟数量与肺癌发病率之间的关系是
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![吸烟数量与肺癌发病率之间的关系是](/uploads/image/z/5880189-21-9.jpg?t=%E5%90%B8%E7%83%9F%E6%95%B0%E9%87%8F%E4%B8%8E%E8%82%BA%E7%99%8C%E5%8F%91%E7%97%85%E7%8E%87%E4%B9%8B%E9%97%B4%E7%9A%84%E5%85%B3%E7%B3%BB%E6%98%AF)
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