1. 13. Food and Drug Administration. Pfizer COVID-19 Vaccine EUA Letter of Authorization reissued. December 2020. (https://www.fda.gov/media/144412/download). Accessed January 8, 2021
2. 18. Food and Drug Administration. Investigational New Drug Application. Code of Federal Regulations, Title 21, Chapter I, Subchapter D, Part 312 [Internet], March 19, 1987 [cited Jan 10, 2021]. (https://www.ecfr.gov/cgi-bin/text-idx?SID=3009e9a9c5d4678c70edf4988b95bf69&mc=true&node=pt21.5.312&rgn=div5)
3. 19. Food and Drug Administration. Drug development inquiries for drugs to address the COVID-19 public health emergency. FDA [Internet], October 2020 [cited Jan 15, 2021]. (https://www.fda.gov/drugs/coronavirus-covid-19-drugs/drug-development-inquiries-drugs-address-covid-19-public-health-emergency)
4. Streamline and improve study start-up;Schimanski;Applied Clinical Trials,2013
5. FDA efficiency for approval process of COVID-19 therapeutics