1. Available at: https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6301a9.htm accessed May 19, 2021.
2. Healthy people 2010: overview,2011
3. Available at: www.marchofdimes.org/peristats/tools/reportcard.aspx Accessed May 19, 2021
4. Births: final data for 2013;Martin;Natl Vital Stat Rep,2015
5. American health improvement depends upon addressing class disparities;Schroeder;Prev Med,2016