@article{article26,
  title = {},
  author = {Ünlü, Y. and Ketenci, I. and Külahlı, I. and Tekalan, Ş.A. and Cemiloğlu, R.},
  journal = {Journal of Clinical Practice and Research},
  year = {1991},
  volume = {13},
  pages = {504-509},
  doi = {}
}