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Article History

Received: 30 October 2018

Accepted: 10 January 2019

First Online: 29 January 2019

Ethics approval and consent to participate

: Official approvals were obtained from the Research Ethics Committee of Taif University and from the deanships of the colleges included in the study. As long as the study does not take samples from humans, there is no probability of a potential harm and all students were more than 18 years, the ethics committee approved obtaining verbal consents from the respondent students before sharing in the study

: The manuscript does not contain any individual person’s data in any form (individual details, images or videos).

: The authors declare that they have no competing interests.

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