@misc{indiciae762b48b80e5d,
  title = {Vectorcardiogram past forty.},
  author = {A C Witham and J E Lahman},
  year = {1970},
  doi = {10.1016/0002-8703(70)90303-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4243724/},
  note = {Source identifier: 4243724}
}