@misc{indiciaeb2652c8a76e6,
  title = {A statistic for inferences based upon negative results.},
  author = {J Grayzel},
  year = {1989},
  doi = {10.1097/00000542-198908000-00034},
  url = {https://pubmed.ncbi.nlm.nih.gov/2818728/},
  note = {Source identifier: 2818728}
}