@misc{indiciae206a71ac7b29,
  title = {Letter: Piped medical-gas systems.},
  author = {W Carson and E Gibson},
  year = {1975},
  doi = {10.1016/s0140-6736(75)90539-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/49689/},
  note = {Source identifier: 49689}
}