根据论文中的背景信息，现行估计值提示吸烟是每年几百万人因例如心脏病和癌症死亡的原因。
Current estimates suggest smoking is responsible for several million deaths per year from causes such as heart disease and cancer, according to background information in the article.
根据论文中的背景信息，现行估计值提示吸烟是每年几百万人因例如心脏病和癌症死亡的原因。
Current estimates suggest smoking is responsible for several million deaths per year from causes such as heart disease and cancer, according to background information in the article.
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