@misc{indiciae35f1f2860605,
  title = {A numbers game: understanding normal standards.},
  author = {P L Willan and K M Bagnall and D W Kellett},
  year = {1978},
  doi = {10.1136/bmj.2.6136.569-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/698584/},
  note = {Source identifier: 698584}
}