@misc{indiciaeaf030b51ff59,
  title = {Left bundle branch block and intermittent type A preexcitation.},
  author = {P Denes and P Goldfinger and K M Rosen},
  year = {1975},
  doi = {10.1378/chest.68.3.356},
  url = {https://pubmed.ncbi.nlm.nih.gov/1157540/},
  note = {Source identifier: 1157540}
}