![](/img/cover-not-exists.png)
Sample size and power for comparing two or more treatment groups in clinical trials.
Day, S. J., Graham, D. F.Volume:
299
Language:
english
Journal:
BMJ
DOI:
10.1136/bmj.299.6700.663
Date:
September, 1989
File:
PDF, 599 KB
english, 1989