@misc{indiciae5f13e9871142,
  title = {Classification of the electrocardiogram for population studies: Minnesota Code.},
  author = {H Blackburn},
  year = {1969},
  doi = {10.1016/s0022-0736(69)80120-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/5367885/},
  note = {Source identifier: 5367885}
}