@misc{indiciae2bf56f6a7147,
  title = {Sample size re-estimation in cluster randomization trials.},
  author = {Stephen Lake and Erin Kammann and Neil Klar and Rebecca Betensky},
  year = {2002},
  doi = {10.1002/sim.1121},
  url = {https://pubmed.ncbi.nlm.nih.gov/12185888/},
  note = {Source identifier: 12185888}
}