@misc{indiciae494ed76848c7,
  title = {Simpson and Hans Andersen.},
  author = {O Secher},
  year = {1971},
  doi = {10.1136/bmj.4.5790.814-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/4944298/},
  note = {Source identifier: 4944298}
}