@article{article256,
  title = {The Evaluation of the Severity of Mitral Regurgitation Using the Color Doppler Echocardiographic Methods},
  author = {Eren, M. and Bolca, O. and Norgaz, T.},
  journal = {The Anatolian Journal of Cardiology},
  year = {2001},
  volume = {1},
  pages = {90-97},
  doi = {}
}