@misc{indiciaea49c9c4fecae,
  title = {Using external data and databases: issues and sources.},
  author = {D I Johnson},
  year = {1995},
  doi = {10.1097/00001786-199510010-00006},
  url = {https://pubmed.ncbi.nlm.nih.gov/7579545/},
  note = {Source identifier: 7579545}
}