@misc{indiciae012bbbb12808,
  title = {Continuing education should be voluntary.},
  author = {S S Cooper},
  year = {1973},
  doi = {10.1016/s0001-2092(07)69354-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4125232/},
  note = {Source identifier: 4125232}
}