@misc{indiciaec8274e4bed56,
  title = {First degree heart block after DC countershock.},
  author = {P O Wester and C Helmers},
  doi = {10.1111/j.0954-6820.1973.tb10544.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4705091/},
  note = {Source identifier: 4705091}
}