Received: 16 December 2019
Accepted: 15 May 2020
First Online: 24 May 2020
Ethics approval and consent to participate
: We confirm that all the research meets the ethical guidelines, including adherence to the legal requirements of the country in the study. All participants confirm their participation in the study in writing. This study was approved by the ethics committee of the University of Duhok, Kurdistan Region Iraq.
: Not applicable.
: The authors declare that they have no competing interests.