Roentgen aspects of atrial septal defect, ostium secundum.

@article{Kraemer1955RoentgenAO,
  title={Roentgen aspects of atrial septal defect, ostium secundum.},
  author={Wilfried Kraemer and Goffredo G. Gensini and S. Gilbert Blount and Raymond R. Lanier},
  journal={Acta radiologica},
  year={1955},
  volume={44 6},
  pages={
          441-50
        }
}