TY  - RPRT
TI  - Analysis did not account for cluster randomisation.
AU  - G Maclennan
AU  - C Ramsay
AU  - J M Grimshaw
AU  - M K Campbell
PY  - 2000
DO  - 10.1136/bmj.321.7274.1473
UR  - https://pubmed.ncbi.nlm.nih.gov/11187952/
ID  - 11187952
ER  -