@misc{indiciae2c71bcf2202e,
  title = {Intermittent left bundle-branch block without obvious heart-disease.},
  author = {D M Krikler and D Lefevre},
  year = {1970},
  doi = {10.1016/s0140-6736(70)91581-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/4190181/},
  note = {Source identifier: 4190181}
}