@misc{indiciaef56f758ff58a,
  title = {Cardioversion following prosthetic mitral valve replacement.},
  author = {H Semer and H Hultgren and R Kleiger and B Braniff},
  year = {1967},
  doi = {10.1161/01.cir.35.3.523},
  url = {https://pubmed.ncbi.nlm.nih.gov/6021333/},
  note = {Source identifier: 6021333}
}