@misc{indiciae6c4c6f5d5acc,
  title = {Quality assurance.},
  author = {M P De Figueiredo},
  year = {1971},
  doi = {10.2105/ajph.61.5.1017},
  url = {https://pubmed.ncbi.nlm.nih.gov/5142588/},
  note = {Source identifier: 5142588}
}