1. World Health Organization Regional Office for Europe. Review of Evidence on Health Aspects of Air Pollution — REVIHAAP Project (WHO, 2013).
2. United States Environmental Protection Agency. Integrated Science Assessment for Particulate Matter (Final Report, Dec 2019) (EPA, 2019).
3. Daellenbach, K. R. et al. Nature 587, 414–419 (2020).
4. United States Environmental Protection Agency. Air Quality Criteria for Particulate Matter (Final Report, 2004) (EPA, 2004).
5. Jimenez, J. L. et al. Science 326, 1525–1529 (2009).