@misc{indiciaecaebcfc16b0d,
  title = {The normal composite electrocardiogram.},
  author = {P S EZRA},
  year = {1961},
  doi = {10.1161/01.cir.24.4.710},
  url = {https://pubmed.ncbi.nlm.nih.gov/13891155/},
  note = {Source identifier: 13891155}
}