@article{
  author = {Sarraf, Fatemeh, Takht, Majidi},
  title = {The Effect of Payment System Based 
on Performance on the Efficiency of Medical Staff
 (Case Study: Tehran Shahid Chamran Hospital)},
  journal = {},
  year = {2018},
  volume = {9},
  number = {18},
  pages = {31-39},
  doi = {}
}