@misc{indiciae4dbaccfc483f,
  title = {A new code for pacemaker operating modes.},
  author = {R R Brownlee and J B Shimmel and C J Del Marco},
  year = {1981},
  doi = {10.1111/j.1540-8159.1981.tb03718.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/6167957/},
  note = {Source identifier: 6167957}
}