@misc{indiciae30e409e3ad3b,
  title = {Sample sizes for prevention trials have been too small.},
  author = {F Ederer and T R Church and J S Mandel},
  year = {1993},
  doi = {10.1093/oxfordjournals.aje.a116739},
  url = {https://pubmed.ncbi.nlm.nih.gov/8484370/},
  note = {Source identifier: 8484370}
}