1. Global clinical trials activity in the details;Getz;Applied Clinical Trials,2007
2. Trends in the globalization of clinical trials;Thiers;Nature Review Drug Discovery,2008
3. West to East drift in European sponsored clinical trials;Karlberg;Clinical Trial Magnifier,2008
4. EMEA reflection paper on the extrapolation of results from clinical studies conducted outside Europe to the EU-population 2009