@misc{indiciaebef25da6d27b,
  title = {Cardiac pacemaker function.},
  author = {R S Pennock and L S Dreifus and D P Morse and Y Watanabe},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4678315/},
  note = {Source identifier: 4678315}
}