1. World Health Organization, Global Spending on Health: A World in Transition, World Health Organization, Geneva, 2019.
2. Roosa Tikkanen, Multinational Comparisons of Health Systems Data, 2019. Commonwealth Fund, 2020.
3. Apoorva Rama, Policy Research Perspectives. National Health Expenditures, 2019: Steady Spending Growth Despite Increases in Personal Health Care Expenditures in Advance of the Pandemic, American Medical Association, 2021.
4. Canadian Institute for Health Information, National Health Expenditure Trends, 2020, Canadian Institute for Health Information, Ottawa, ON, 2021.
5. Understanding the Costs Associated With Surgical Care Delivery in the Medicare Population;Kaye;Ann. Surg.,2020