@misc{indiciae4a6fe2678d06,
  title = {The pacemaker sound.},
  author = {M Korn and C D Schoenfeld and A Ghahramani and P Samet},
  year = {1970},
  doi = {10.1016/s0002-9343(70)80038-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/5477635/},
  note = {Source identifier: 5477635}
}