1. Legumes, lemons and streptomycin: a short history of the clinical trial;Collier;CMAJ,2009
2. Evolution of clinical research: a history before and beyond James Lind 2010;Bhatt;Perspect Clin Res,2010
3. Dabrowska A, Thaul S. How FDA approves drugs and regulates their safety and effectiveness Congressional Research Service. 2018. Available at: https://fas.org/sgp/crs/misc/R41983.pdf (Accessed December, 2019).
4. US Food and Drug Administration. How did the Federal Food, Drug and Cosmetic Act come about? Available at: https://www.fda.gov/about-fda/fda-basics/how-did-federal-food-drug-and-cosmetic-act-come-about. (Accessed December, 2019).
5. US Food and Drug Administration. Kefauver-Harris amendments revolutionized drug development. Available at:https://www.fda.gov/consumers/consumer-updates/kefauver-harris-amendments-revolutionized-drug-development. (Accessed December, 2019).