[Phonocardiographic study of atrial septal defects: pre-and post-operative correlation between external and intercadiac phonocardiogram].

@article{Brando1966PhonocardiographicSO,
  title={[Phonocardiographic study of atrial septal defects: pre-and post-operative correlation between external and intercadiac phonocardiogram].},
  author={Ayrton Pires Brand{\~a}o and J Barbosa filho and Edson A. Saad and Paulo Ginefra and E A Aguiar and A B Benchimol},
  journal={Arquivos brasileiros de cardiologia},
  year={1966},
  volume={19 4},
  pages={285-98}
}