Text and Data Mining valid from 2019-10-10
Received: 5 February 2019
Accepted: 3 September 2019
First Online: 10 October 2019
Ethics approval and consent to participate
: Ethics approval for this study was provided by the institutional review board (IRB) at King Abdullah International Medical Research Center (KAIMRC) in Riyadh under protocol number SP17-148-R. Informed consent was obtained from all the participants.
: Not applicable
: The authors declare that they have no competing interests.