Funding for this research was provided by:
Sultan Qaboos University (IG/MED/BIOC/17/01)
Received: 3 October 2019
Accepted: 19 January 2020
First Online: 2 March 2020
Ethics approval and consent to participate
: This work was approved by the College of Medicine and Health Sciences Ethics Committee, Ref. No. SQU-EC/121/16, MREC #1311. Written consent was obtained from all study participants.
: Not applicable.
: The authors declare that they have no competing interests.