@misc{indiciae1e44ffcf09e3,
  title = {Pacemaker-ventricular blocks.},
  author = {G Forssell and R Nordlander and O Nyquist and E Orinius},
  year = {1974},
  doi = {10.1111/j.0954-6820.1974.tb08146.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4821300/},
  note = {Source identifier: 4821300}
}