@misc{indiciaeb3d6b48086bc,
  title = {Permanent transvenous sequential atrioventricular pacing. Problems in its application.},
  author = {A S Santos and M Wynyard and M M Black},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4669979/},
  note = {Source identifier: 4669979}
}