@misc{indiciae7d38f4f18055,
  title = {Analysis did not account for cluster randomisation.},
  author = {G Maclennan and C Ramsay and J M Grimshaw and M K Campbell},
  year = {2000},
  doi = {10.1136/bmj.321.7274.1473},
  url = {https://pubmed.ncbi.nlm.nih.gov/11187952/},
  note = {Source identifier: 11187952}
}