Funding for this research was provided by:
Khalifa University of Science, Technology and Research
Received: 28 February 2017
Accepted: 9 January 2018
First Online: 17 January 2018
Ethics approval and consent to participate
: Participation was voluntary, each subject was given a briefing session after which they agreed to sign an informed consent form. The study was approved by the Institutional Ethics Committee of Mafraq Hospital in Abu Dhabi (Reference #18052014).
: Not applicable
: The authors declare that they have no competing interests
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