1. HHS. American Patients First. 2018 May [cited 2018 May 17]. Avaliable from: https://www.hhs.gov/sites/default/files/AmericanPatientsFirst.pdf
2. CNBC. US prescription drug spending as high as $610 billion by 2021. 2017 May 4 [cited 2018 May 17]. Avaliable from: https://www.cnbc.com/2017/05/04/us-prescription-drug-spending-as-high-as-610-billion-by-2021-report.html
3. Jackson HC. 6 promises Trump has made about health care. 2017 Mar 14 [cited 2018 May 17]. Avaliable from: https://www.politico.com/story/2017/03/trump-obamacare-promises-236021
4. Politico Pro Staff. Trump backs medicare negotiating drug prices. 2016 Jan 26 [cited 2018 May 18]. Avaliable from: https://www.politico.com/story/2016/01/trump-backs-medicare-negotiating-drug-prices-218215
5. Rovner J. Why high drug prices are a hot campaign topic this year. 2016 Sept15 [2018 May 20]. Avaliable from: http://time.com/money/4495992/drug-prices-presidential-election/