1. Using External Reference Pricing In Medicare Part D To Reduce Drug Price Differentials With Other Countries
2. National Health Expenditure Data: Historical. Centers for Medicare & Medicaid Services.https://www.cms.gov/Research-Statistics-Data-and-Systems/Statistics-Trends-and-Reports/NationalHealthExpendData/NationalHealthAccountsHistorical Accessed June 22 2020
3. Anderson‐CookA MaedaJ DingR PatelYM NelsonL.Prices for and spending on specialty drugs in Medicare part D and Medicaid; 2019.https://www.cbo.gov/system/files/2019-03/54964-Specialty_Drugs.pdf Accessed June 22 2020