@misc{indiciaed45134ed14df,
  title = {Left heart catheterization by direct ventricular puncture.},
  author = {T Semple and J B McGuinness and H Gardner},
  year = {1968},
  doi = {10.1136/hrt.30.3.402},
  url = {https://pubmed.ncbi.nlm.nih.gov/5651255/},
  note = {Source identifier: 5651255}
}