@misc{indiciaeaa70dfb8dbee,
  title = {One man's opinion.},
  author = {W C Keettel},
  year = {1973},
  doi = {10.1016/0002-9378(73)90606-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/4687985/},
  note = {Source identifier: 4687985}
}