Received: 11 October 2018
Accepted: 6 January 2019
First Online: 21 January 2019
Ethics approval and consent to participate
: The medical ethics committee of Faculty of Medicine for Girls, Al-Azhar University, approved this study. The reference Number of the committee is not available and the date of approval was at June 2014. Before and during this study the informed consent was obtained from all study participants after brief discussion and explanation with them.
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