@article{article2570,
  title = {A normofunctioning caged-ball aortic valve prosthesis for 31 years},
  author = {Başkurt, M. and Nihan  Turhan, F. and Ökçün, B. and Küçükoğlu, S.},
  journal = {The Anatolian Journal of Cardiology},
  year = {2009},
  volume = {9},
  pages = {255-256},
  doi = {}
}