Ergonovine echocardiography for the diagnosis of coronary vasospasm.

@article{Cheng1999ErgonovineEF,
  title={Ergonovine echocardiography for the diagnosis of coronary vasospasm.},
  author={Tsung O. Cheng},
  journal={The American journal of cardiology},
  year={1999},
  volume={83 4},
  pages={641}
}