@misc{indiciaee62e45eb0f49,
  title = {P WAVE CHANGES REFLECTING ATRIAL MORPHOLOGY.},
  author = {H I MILLER and I SPERTUS},
  year = {1964},
  doi = {10.1378/chest.46.5.578},
  url = {https://pubmed.ncbi.nlm.nih.gov/14228363/},
  note = {Source identifier: 14228363}
}