@misc{indiciaeca81861127fe,
  title = {A Wenckebach variant.},
  author = {C L Schamroth and L Schamroth},
  year = {1981},
  doi = {10.1378/chest.79.1.77},
  url = {https://pubmed.ncbi.nlm.nih.gov/7449509/},
  note = {Source identifier: 7449509}
}