@misc{indiciaea0b458146714,
  title = {Contamination in trials: is cluster randomisation the answer?},
  author = {D J Torgerson},
  year = {2001},
  doi = {10.1136/bmj.322.7282.355},
  url = {https://pubmed.ncbi.nlm.nih.gov/11159665/},
  note = {Source identifier: 11159665}
}