Received: 17 June 2019
Accepted: 7 January 2020
First Online: 29 January 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Review Board of College of Medicine, Prince Sattam Bin Abdulaziz University, KSA, on 7 November 2016. Written consent was taken from all of the participants after explaining the details, benefits, and risks to them.
: Not applicable.
: The authors declare that they have no competing interests.