@misc{indiciae38e1939ab4f0,
  title = {[Electrocardiographic observations in pacemaker-induced ventricular conversion systoles].},
  author = {A Wirtzfeld},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4118087/},
  note = {Source identifier: 4118087}
}