@misc{indiciae4eee29f3ea5d,
  title = {Statistics notes. Trials randomised in clusters.},
  author = {J M Bland and S M Kerry},
  year = {1997},
  doi = {10.1136/bmj.315.7108.600},
  url = {https://pubmed.ncbi.nlm.nih.gov/9302962/},
  note = {Source identifier: 9302962}
}