1. Do Certain Countries Produce Only Positive Results? A Systematic Review of Controlled Trials
2. European Medicines Agency. EMA/INS/GCP/154352/2010 (2010)Clinical trials submitted in marketing authorisation applications to the EMA. November 5 2010 http://www.ema.europa.eu/docs/en_GB/document_library/Other/2009/12/WC500016819.pdf
3. Concern over foreign trials for drugs sold in U.S. (2010)New York Times June 21 2010 http://www.nytimes.com/2010/06/22/health/research/22trial.html.
4. Deadly Medicine(2011)Vanity Fair. January 2011.
5. The Globalization of Clinical Trials http://www.pfizer.com/sites/default/files/research/nejm_paper_globalization_of_trials.pdf