@misc{indiciaef434aa195af5,
  title = {Premature ventricular beats.},
  author = {D P Zipes and C Fisch},
  year = {1971},
  doi = {10.1001/archinte.128.1.140},
  url = {https://pubmed.ncbi.nlm.nih.gov/4103596/},
  note = {Source identifier: 4103596}
}