Text and Data Mining valid from 2018-09-06
First Online: 6 September 2018
Compliance with Ethical Standards
: An ethical approval letter has been acquired from the Research Ethics Committee, Najran University, Kingdom of Saudi Arabia, prior to this study. Anonymity of all the participants in this study will be kept.
: The authors declare that they have no competing interests.
: Informed consent was obtained from all individual participants included in the study.