The current study looked only at major causes of mortality, which the researchers grouped together as cardiovascular disease, cancer, chronic respiratory disease or other.

目前研究的课题主要是死亡率，研究人员认为引起死亡的主要因素是心血管疾病、癌症、慢性呼吸系统疾病和其他病因。

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Cost estimates are current as of publication and intended only for planning purposes. Actual pricing will vary depending on the make, model and quantity of respiratory protection devices selected.

对产品费用的估计以当前公开的资料为依据，仅供计划编制使用。产品实际价格会随呼吸器的品牌、型号和购买数量的不同而有所不同。

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Respiratory system (For current or previous tuberculosis, provide date and duration of treatment and name, strength and dosage of drugs used.

呼吸系统（如果接受体检的人目前或过去是肺结核病患者，请指出患病日期、治疗期限以及其所使用过药物名称、药力与药量。

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