Received: 7 October 2019
Accepted: 8 June 2020
First Online: 12 June 2020
Ethics approval and consent to participate
: This study was conducted according to the guidelines laid down in the Declaration of Helsinki and all procedures involving human subjects were approved by the Kurdistan University of Medical Sciences Ethics Committee (with IR.MUK.REC.1395/396 the committee’s reference number).
: Not applicable.
: The authors declare that they have no conflict of interest.