Funding for this research was provided by:
Shiraz University of Medical Sciences, Shiraz, Iran (1396-01-08-14139)
Received: 13 February 2019
Accepted: 30 October 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: Written informed consent was obtained from all the participants. The study was approved by the Ethics Committee of Shiraz University of Medical Sciences, Shiraz, Iran (IR.SUMS.REC. 1396.S613).
: Not applicable.
: The authors declare that they have no competing interests.