@misc{indiciaef44c9e558c3a,
  title = {Uncorrected vs. corrected vectorcardiographic lead system.},
  author = {H Mark},
  year = {1971},
  doi = {10.1016/0002-8703(71)90178-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4253178/},
  note = {Source identifier: 4253178}
}