Bishai, David, Qingfeng Li, and Sai Ma. “Economic Recessions and Infant Mortality in the U.S., 1999-2008”. International Journal of Child Health and Nutrition 3, no. 1 (March 10, 2014): 60–66. Accessed May 1, 2024. https://www.lifescienceglobal.com/pms/index.php/ijchn/article/view/1573.