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References
1.
Donner
A
Klar
N
. Design and Analysis of Cluster Randomization Trials in Health Research . Arnold , London . 2000 .
2.
Murray
DM
. The Design and Analysis of Group-Randomized Trials . University Press , Oxford . 1998 .
3.
Donner
A
Birkett
N
Buck
C
. Randomization by cluster: sample size requirements and analysis . Am J Epidemiol
1981 ; 114 : 906 –14 .
4.
Campbell
MK
Elbourne
DR
Altman
DG
. CONSORT statement: extension to cluster randomised trials . BMJ
2004 ; 328 : 702 –08 .