@misc{indiciae502553de322f,
  title = {AV techniques in CPR teaching.},
  author = {M B Ravin and P M Warwick},
  year = {1974},
  doi = {10.1016/s0001-2092(07)63368-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/4135305/},
  note = {Source identifier: 4135305}
}