[Ejection fraction and average rate of circumferential contraction of the left ventricle evaluated by the apex cardiogram. Correlation with echocardiographic and angiographic measurements].

@article{Bernardini1982EjectionFA,
  title={[Ejection fraction and average rate of circumferential contraction of the left ventricle evaluated by the apex cardiogram. Correlation with echocardiographic and angiographic measurements].},
  author={Bernardino Bernardini and Deodato Assanelli and Alejandro Marchini and V Petroboni},
  journal={Cardiologia},
  year={1982},
  volume={27 1},
  pages={69-74}
}