@misc{indiciae2c3e37d7c3ab,
  title = {Left atrial P waves: reply.},
  author = {R A Massumi},
  year = {1968},
  doi = {10.1016/0002-9149(68)90296-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/5650741/},
  note = {Source identifier: 5650741}
}