1. The continuing unethical conduct of underpowered clinical trials;Halpern;JAMA,2002
2. Statistics and ethics in medical research, III: how large a sample?;Altman;BMJ,1980
3. Why “underpowered” trials are not necessarily unethical;Edwards;Lancet,1997
4. The ethics of underpowered clinical trials;Janosky;JAMA,2002
5. The ethics of underpowered clinical trials;Hughes;JAMA,2002