Funding for this research was provided by:
King Abdulaziz City for Science and Technology (12MED3108-03)
Received: 18 December 2018
Accepted: 13 March 2019
First Online: 25 March 2019
Ethics approval and consent to participate
: This study was approved by the ethical research committee of the Faculty of Medicine at King Abdulaziz University (HA-02-J-008), under the reference number (235–15) and performed according to the approved guidelines. Formal consent was therefore not required.
: Not applicable.
: The authors declare that they have no competing interests.
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