@misc{indiciae79b996832b87,
  title = {The cardiac cycle.},
  author = {J Grayzel},
  year = {1991},
  doi = {10.1016/1053-0770(91)90028-r},
  url = {https://pubmed.ncbi.nlm.nih.gov/1768834/},
  note = {Source identifier: 1768834}
}