@misc{indiciaec40f95d222bf,
  title = {Estimating sample sizes for binary, ordered categorical, and continuous outcomes in two group comparisons.},
  author = {M J Campbell and S A Julious and D G Altman},
  year = {1995},
  doi = {10.1136/bmj.311.7013.1145},
  url = {https://pubmed.ncbi.nlm.nih.gov/7580713/},
  note = {Source identifier: 7580713}
}