@misc{indiciaecf9bdce4e10f,
  title = {LV volumes and EF by echo.},
  author = {K V Olshausen},
  year = {1980},
  doi = {10.1161/01.cir.61.5.1056},
  url = {https://pubmed.ncbi.nlm.nih.gov/7363429/},
  note = {Source identifier: 7363429}
}