@misc{indiciaee19b546b4469,
  title = {Methods for modelling change in cluster randomization trials.},
  author = {Neil Klar and Gerarda Darlington},
  year = {2004},
  doi = {10.1002/sim.1858},
  url = {https://pubmed.ncbi.nlm.nih.gov/15273952/},
  note = {Source identifier: 15273952}
}