@misc{indiciae18e965e0402a,
  title = {Intravascular electrocardiography--a resurrected technique.},
  author = {T G Johans and D L Mallory},
  year = {1989},
  doi = {10.1007/bf01627459},
  url = {https://pubmed.ncbi.nlm.nih.gov/2769320/},
  note = {Source identifier: 2769320}
}