Text and Data Mining valid from 2019-02-09
Received: 10 May 2018
Accepted: 29 January 2019
First Online: 9 February 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interests.
: The ethical approval conducted in Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran with code IR.SSU.SPH.REC.1395.119.