1. ICH Topic E9 Statistical Principles for Clinical Trials (CPMP/ICH/363/96), www.emea.europa.eu, 1998. Accessed 5th February 2008.
2. Points to Consider on Adjustment for Baseline Covariates (CPMP/EWP/2863/99), www.emea.europa.eu, 2003. Accessed 5th February 2008.
3. ICH Topic E10 Choice of Control Group in Clinical Trials (CPMP/ICH/364/96), www.emea.europa.eu, 2001. Accessed 5th February 2008.
4. Points to Consider on Switching between Superiority and Non-inferiority (CPMP/EWP/482/99), www.emea.europa.eu, 2001. Accessed 5th February 2008.
5. Note for guidance on Choice of a Non-Inferiority Margin (CPMP/EWP/2158/99), www.emea.europa.eu, 2006. Accessed 5th February 2008.