@misc{indiciae6bd79e460880,
  title = {A multipurpose anglepiece with expiratory valve.},
  author = {R B CLAYTON},
  year = {1955},
  doi = {10.1111/j.1365-2044.1955.tb01588.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/14376835/},
  note = {Source identifier: 14376835}
}