Funding for this research was provided by:
The Vice Chancellor for Research, Hamadan university of Medical Science, Hamadan/Iran (9510146066)
Text and Data Mining valid from 2019-11-09
Received: 7 September 2019
Accepted: 28 October 2019
First Online: 9 November 2019
Ethics approval and consent to participate
: This study was approved by the ethics committee of Hamadan University of Medical Sciences (No: IRUMSHA. REC. 1395066).
: Not applicable.
: The authors declare that they have no competing interests.