@misc{indiciaec6ab8ee6d950,
  title = {Letter: recertification.},
  author = {R O Wallerstein},
  year = {1975},
  doi = {10.7326/0003-4819-82-5-718\_1},
  url = {https://pubmed.ncbi.nlm.nih.gov/1137271/},
  note = {Source identifier: 1137271}
}