@misc{indiciaeb8cfe30b8db3,
  title = {Left ventricular function: assessment by wide angle two-dimensional ultrasonic sector scanning.},
  author = {H Rakowski and R P Martin and R L Popp},
  year = {1979},
  doi = {10.1111/j.0954-6820.1979.tb01093.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/286501/},
  note = {Source identifier: 286501}
}