@misc{indiciaef926215d40ae,
  title = {Randomization by group: a formal analysis.},
  author = {J Cornfield},
  year = {1978},
  doi = {10.1093/oxfordjournals.aje.a112592},
  url = {https://pubmed.ncbi.nlm.nih.gov/707470/},
  note = {Source identifier: 707470}
}