[Application of the ultrasonic echo method in cardiac diagnosis].

@article{Effert1957ApplicationOT,
  title={[Application of the ultrasonic echo method in cardiac diagnosis].},
  author={Sven Effert and H Erkens and F GROSSEBROCKHOFF},
  journal={Deutsche medizinische Wochenschrift},
  year={1957},
  volume={82 31},
  pages={1253-7}
}