Nomograms for determination of mixed venous oxygen content and oxygen step-up in atrial septal defect.

@article{Ridges1970NomogramsFD,
  title={Nomograms for determination of mixed venous oxygen content and oxygen step-up in atrial septal defect.},
  author={J D Ridges and Donald C. Harrison},
  journal={American heart journal},
  year={1970},
  volume={80 4},
  pages={575-7}
}