@misc{indiciaedeabc661d7ba,
  title = {Echocardiographic evaluation of left ventricular function.},
  author = {R S Meltzer and R L Popp},
  year = {1980},
  url = {https://pubmed.ncbi.nlm.nih.gov/7309062/},
  note = {Source identifier: 7309062}
}