@article{article551,
  title = {PISA method for assessment of mitral regurgitation in children},
  author = {Başpınar, O. and Karaaslan, S. and Oran, B.},
  journal = {The Anatolian Journal of Cardiology},
  year = {2005},
  volume = {5},
  pages = {167-171},
  doi = {}
}