@misc{indiciae69665b995008,
  title = {Beat-to-beat analysis of left ventricular function parameters.},
  author = {G T Meester and C Zeelenberg and S Gorter and A C Miller and P G Hugenholtz},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4613559/},
  note = {Source identifier: 4613559}
}