topic: US Infant Mortality and Environmental Policy

https://academic.oup.com/ije/article/43/3/818/759797/US-infant-mortality-and-the-President-s-party

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1470072/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1240919/