1. Centers for Medicare and Medicaid Services, National Health Expenditures Fact Sheet 2018 https://www.cms.gov/research-statistics-data-and-systems/statistics-trends-and-reports/nationalhealthexpenddata/nhe-fact-sheet.html
2. HSRProj 2017 HSRProj Research Includes Studies and Papers on a Variety of Topics http://www.academyhealth.org/hsrprojsubmit http://www.academyhealth.org/hsrprojcharts
3. The Anatomy of Medical Research: US and International Comparisons;Moses;Journal of the American Medical Association,2015
4. NIH Reporter https://report.nih.gov/categorical_spending.aspx
5. Science Magazine Trump, Congress Approve Largest U.S. Research Spending Increase in a Decade http://www.sciencemag.org/news/2018/03/updated-us-spending-deal-contains-largest-research-spending-increase-decade