@misc{indiciae802eebff4e8e,
  title = {Sample size determination.},
  author = {V Clark},
  year = {1991},
  doi = {10.1097/00006534-199103000-00030},
  url = {https://pubmed.ncbi.nlm.nih.gov/1998031/},
  note = {Source identifier: 1998031}
}