@misc{indiciae229671318cbc,
  title = {Letter: Preserving the mm Hg.},
  author = {R Passmore},
  year = {1975},
  doi = {10.1016/s0140-6736(75)90988-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/49821/},
  note = {Source identifier: 49821}
}