@misc{indiciaeeeb1ee872949,
  title = {Postural heart block.},
  author = {P E Seda and J H McAnulty and C J Anderson},
  year = {1980},
  doi = {10.1136/hrt.44.2.221},
  url = {https://pubmed.ncbi.nlm.nih.gov/7426177/},
  note = {Source identifier: 7426177}
}