Ethical issues in the design and conduct of cluster randomised controlled trials.
Edwards
S J
SJ
Department of Public Health Medicine, University of Birmingham, Birmingham B15 2TT. S.J.Edwards@bham.ac.uk
Braunholtz
D A
DA
Lilford
R J
RJ
Stevens
A J
AJ
D016000:Cluster Analysis; D035061:Control Groups; D004992:Ethics, Medical; D016032:Randomized Controlled Trials as Topic / Q000379:methods* / Q000592:standards; D012107:Research Design / Q000592:standards