@misc{indiciaeaaf31db23f43,
  title = {Letter: Recertification.},
  author = {R E Cohn},
  year = {1973},
  doi = {10.7326/0003-4819-79-5-755\_2},
  url = {https://pubmed.ncbi.nlm.nih.gov/4751757/},
  note = {Source identifier: 4751757}
}