为一篇关于环境污染的论文提供引用建议。
论文主题为空气污染和人体健康的关系。
以下是几个相关的引用建议：

1. Pope, C.A., III, & Dockery, D.W. (2006). Health effects of fine particulate air pollution: Lines that connect. Journal of the Air & Waste Management Association, 56(6), 709-742.

2. World Health Organization. (2013). Review of evidence on health aspects of air pollution – REVIHAAP Project. Copenhagen, Denmark: WHO Regional Office for Europe.

3. Brook, R.D., Rajagopalan, S., Pope, C.A., III, et al. (2010). Particulate matter air pollution and cardiovascular disease: An update to the scientific statement from the American Heart Association. Circulation, 121(21), 2331-2378.

4. Cao, J., Huang, R., & Qi, Z. (2018). Fine particulate matter (PM2.5) in China at a city level. Scientific Reports, 8(1), 1-12.

5. Kim, K.H., Kabir, E., & Kabir, S. (2015). A review on the human health impact of airborne particulate matter. Environment International, 74, 136-143.