Primary paper: Elder, T. E., Goddeeris, J. H., & Haider, S. J. . “Racial and ethnic infant mortality gaps and the role of sociology-economic status.” Labour Economics, 43: 42–54.
Some highlights at https://link.springer.com/article/10.1007/s13524-020-00878-4
Why is infant mortality higher in the United States than in Europe? American Economic Journal: