@misc{indiciae3556b31fa546,
  title = {Time-limited certification.},
  author = {P E Weary},
  year = {1988},
  doi = {10.1016/s0190-9622(88)80016-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/3385031/},
  note = {Source identifier: 3385031}
}