@misc{indiciaef2f7ca5cacfa,
  title = {Bigeminy on exertion.},
  author = {M A RAZZAK},
  year = {1963},
  doi = {10.1161/01.cir.28.1.32},
  url = {https://pubmed.ncbi.nlm.nih.gov/13973370/},
  note = {Source identifier: 13973370}
}