Funding for this research was provided by:
University of Tabuk (S-025-1439)
Received: 13 November 2019
Accepted: 29 November 2019
First Online: 9 December 2019
Ethics approval and consent to participate
: All participants were invited to sign a written informed consent, and ethical approval was obtained from the ethical committee of the University of Tabuk (Ref. UT-69-18-2018, date 25/10/2018.
: Not applicable.
: The author declares that they have no competing interests.