Funding for this research was provided by:
Vice chancellor for research, university of Hamadan (9703291715)
Received: 26 August 2019
Accepted: 3 October 2019
First Online: 21 October 2019
Ethical approval and consent to participate
: This study was approved by the ethics committee of Hamadan University of Medical Sciences (No: IRUMSHA. REC. 1397.193). Consent to participate is not applicable.
: Consent for publication is not applicable for this study.
: The authors declare that they have no competing interests.