TY  - RPRT
TI  - CONSORT statement: extension to cluster randomised trials.
AU  - Marion K Campbell
AU  - Diana R Elbourne
AU  - Douglas G Altman
AU  - CONSORT group
PY  - 2004
DO  - 10.1136/bmj.328.7441.702
UR  - https://pubmed.ncbi.nlm.nih.gov/15031246/
ID  - 15031246
ER  -