@misc{indiciaef6be10772d4e,
  title = {Letter: Artificial sighs.},
  author = {D Nicholson and R M Mazey},
  year = {1974},
  doi = {10.1001/jama.1974.03230470018006},
  url = {https://pubmed.ncbi.nlm.nih.gov/4526505/},
  note = {Source identifier: 4526505}
}