在大多数发达国家，癌症是仅次于心血管病的第二大死亡原因，而且流行病学证据表明这一趋势在较不发达世界正在显现。

In most developed countries, cancer is the second largest cause of death after cardiovascular disease, and epidemiological evidence points to this trend emerging in the less developed world.

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背景：近年的流行病学研究认为收缩压和脉压预测心血管疾病危险优于舒张压。

Background: Recent epidemiology researches have demonstrated that systolic pressure and pulse pressure are better in predicting the cardiovascular disease comparing with diastolic pressure.

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学者们在流行病学调查中发现高砷暴露的吸烟者的肺癌、膀胱癌、心血管疾病等的发病率明显增加。

Epidemiologic investigations showed incidence rate of lung cancer, bladder cancer and cardiovascular disease significantly increased in the population exposed to them both.

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