共 4 条
[1]
Bacchetti P, 2005, AM J EPIDEMIOL, V161, P105, DOI 10.1093/aje/kwi014
[3]
The continuing unethical conduct of underpowered clinical trials
[J].
JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION,
2002, 288 (03)
:358-362

