Roentgen evaluation of pulmonary arterial pressure in mitral stenosis.

@article{Johnson1961RoentgenEO,
  title={Roentgen evaluation of pulmonary arterial pressure in mitral stenosis.},
  author={Peter W M Johnson and Earl H. Wood and BernardS. Pasternack and Michael Allan Jones},
  journal={Radiology},
  year={1961},
  volume={76},
  pages={
          541-7
        }
}
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