@misc{indiciae6ab47d1c8cc1,
  title = {Systolic time intervals: a non-invasive method to determine left ventricular function. Current status, advantages and limitations.},
  author = {R Shabetai},
  year = {1973},
  url = {https://pubmed.ncbi.nlm.nih.gov/4709669/},
  note = {Source identifier: 4709669}
}