1. Agency for Healthcare Research and Quality. 2006. The High Concentration of U.S. Health Care Expenditures. Retrieved January 23, 2023 from https://meps.ahrq.gov/data_files/publications/ra19/ra19.pdf.
2. Fragmented division of labor and healthcare costs: Evidence from moves across regions;Agha;J. Public Econ.,2019
3. Using Generalized Linear Models to Assess Medical Care Costs;Blough;Health Serv. Outcomes Res. Method.,2000
4. Bolnick, H. J., Bui, A. L., Bulchis, A., Chen, C., Chapin, A., Lomsadze, L., Mokdad, A. H., Millard, F., Dieleman, J. L. 2020. Health-care spending attributable to modifiable risk factors in the USA: an economic attribution analysis. Lancet Public Health, 5(10), e525-e535. https://doi.org/10.1016/S2468-2667(20)30203-6.
5. Center for Medicare & Medicaid Services. 2022. National Healthcare Expenditure Fact Sheet Retrieved January 23, 2023 from https://www.cms.gov/Research-Statistics-Data-and-Systems/Statistics-Trends-and-Reports/NationalHealthExpendData/NHE-Fact-Sheet.