@misc{indiciae40e30a5c484a,
  title = {Electrical activity during the P-R interval.},
  author = {B F HOFFMAN and P F CRANEFIELD and J H STUCKEY and A A BAGDONAS},
  year = {1960},
  doi = {10.1161/01.res.8.6.1200},
  url = {https://pubmed.ncbi.nlm.nih.gov/13715001/},
  note = {Source identifier: 13715001}
}