Funding for this research was provided by:
King Abdullah International Medical Research Center (Protocol RC08-092)
Received: 16 November 2017
Accepted: 8 August 2018
First Online: 23 August 2018
Ethics approval and consent to participate
: The study protocol was approved by the institutional review board (IRB) and ethics committee at King Abdullah International Medical Research Center (KAIMRC) and the Ministry of Education (MOE). Written parental consent and student assent were obtained prior to subjects’ enrollment in the study. Students were assured that all the responses that they provided on the questionnaire would remain anonymous and confidential.
: Not applicable.
: The authors declare that they have no competing interests.
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