@misc{indiciae987581229ffd,
  title = {[Problems and results in pacemaker implantation].},
  author = {F Helmer and E Domanig and A Elkadi and E Wolner},
  year = {1967},
  url = {https://pubmed.ncbi.nlm.nih.gov/5591367/},
  note = {Source identifier: 5591367}
}