Ezekiel J. Emanuel (9 de septiembre de 2015). «The Solution to Drug Prices». The New York Times. «On average, only one in every 5,000 compounds that drug companies discover and put through preclinical testing becomes an approved drug. Of the drugs started in clinical trials on humans, only 10 percent secure F.D.A. approval. ...»
sciencemag.org
blogs.sciencemag.org
Lowe, Derek (2 de febrero de 2018). «A New Look at Clinical Success Rates». In the Pipeline, American Association for the Advancement of Science. Consultado el 4 de mayo de 2019.