@misc{indiciae43341502cf38,
  title = {[Pacemaker parasystole].},
  author = {G H von Knorre and G Hafemeister and G Schröder},
  year = {1970},
  url = {https://pubmed.ncbi.nlm.nih.gov/5523526/},
  note = {Source identifier: 5523526}
}