@misc{indiciae320632fc91c8,
  title = {Plastics for tracheal tubes.},
  author = {W L Guess},
  year = {1970},
  doi = {10.1097/00004311-197000840-00006},
  url = {https://pubmed.ncbi.nlm.nih.gov/4998803/},
  note = {Source identifier: 4998803}
}