Funding for this research was provided by:
This work was supported by the Student Research Committee, Kerman University of Medical Sciences, Kerman, Iran ((IR.KMU.REC.1395.339))
Article History
Received: 7 February 2018
Accepted: 2 July 2018
First Online: 3 September 2018
Conflict of interest
: Z. Zahirnia, S. Mansouri, and F. Saffari declare that they have no competing interests.