Funding for this research was provided by:
Zahedan University of Medical Sciences (7970)
Text and Data Mining valid from 2018-10-08
Received: 22 June 2018
Accepted: 6 September 2018
First Online: 8 October 2018
Compliance with ethical standards
: The authors declare that they have no conflicts of interest.
: This research did not involve human participants and/or animals.
: For this type of study formal consent is not required.