@misc{indiciae9a21d9b284cc,
  title = {[Estimating sinus node function by measuring the effective refractory period of the sinus node].},
  author = {C Zheng},
  year = {1986},
  url = {https://pubmed.ncbi.nlm.nih.gov/3816513/},
  note = {Source identifier: 3816513}
}