@misc{indiciaeee5eaecf8c0c,
  title = {A pacemaker frontal plane vector plotter.},
  author = {G D Green and W J Hannan},
  year = {1972},
  doi = {10.1016/0002-8703(72)90221-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/5053158/},
  note = {Source identifier: 5053158}
}