@misc{indiciae80400e6ba6da,
  title = {External quality assurance.},
  author = {A D Hirst},
  year = {1998},
  doi = {10.1177/000456329803500103},
  url = {https://pubmed.ncbi.nlm.nih.gov/9463736/},
  note = {Source identifier: 9463736}
}