1. The Henry J. Kaiser Family Foundation website. The Medicare Prescription Drug Benefit fact sheet. Published September 26, 2016. Available at: 〈http://kff.org/medicare/fact-sheet/the-medicare-prescription-drug-benefit-fact-sheet/〉. Accessed January 21, 2017.
2. Varying pharmacy benefits with clinical status: the case of cholesterol-lowering therapy;Goldman;Am J Manag Care,2006
3. The impact of medicare part D on prescription drug use by the elderly;Lichtenberg;Health Aff,2007
4. Medicare beneficiaries' knowledge of part D prescription drug program benefits and responses to drug costs;Hsu;J Am Med Assoc,2008
5. Experiences Obtaining Drugs Under Part D: Focus Groups with Beneficiaries, Physicians, and Pharmacists;Hargrave,2008