@misc{indiciae23b355ca8d45,
  title = {Protamine and left ventricular function: a transesophageal echocardiography study.},
  author = {M R Del Re and J D Ayd and L W Schultheis and E S Heitmiller},
  year = {1993},
  doi = {10.1213/00000539-199312000-00003},
  url = {https://pubmed.ncbi.nlm.nih.gov/8250297/},
  note = {Source identifier: 8250297}
}