Cardiospasm, a generalized disorder of esophageal motility.

@article{Kramer1949CardiospasmAG,
  title={Cardiospasm, a generalized disorder of esophageal motility.},
  author={Philip Kramer and Franz J. Ingelfinger},
  journal={The American journal of medicine},
  year={1949},
  volume={7 2},
  pages={174-9}
}