1. New York Times http://www.nytimes.com/2008/11/02/magazine/02fda-t.html
2. Food and Drug Administration http://www.fda.gov/AboutFDA/WhatWeDo/History/Origin/ucm054819.htm
3. Food and Drug Administration http://www.fda.gov/AboutFDA/WhatWeDo/History/Milestones/ucm128305.htm
4. Independent Policy Report http://www.independent.org/pdf/policy_reports/2010-02-10-fda.pdf
5. Policy developments in regulatory approval;Temple;Statistics in Medicine,2002