Text and Data Mining valid from 2018-03-07
Received: 25 September 2017
Accepted: 15 February 2018
First Online: 7 March 2018
Change Date: 17 December 2018
Change Type: Correction
Change Details: Following publication of the original article , the authors reported that one of the authors’ names is spelled incorrectly. In this Correction the incorrect and correct author name are shown.
Ethics approval and consent to participate
: The study was approved by the institutional review board of the King Abdullah International Medical Research Centre. Written informed consent forms were distributed to the students. Only those who agreed to participate in the study were enrolled. Incomplete questionnaires were not included in the study.
: Not applicable.
: The authors declare that they have no competing interests.
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