Text and Data Mining valid from 2018-05-02
Received: 14 May 2017
Accepted: 5 April 2018
First Online: 2 May 2018
Ethics approval and consent to participate
: Ethical approval was obtained from the Research Ethics Committee of Faculty of Medicine of Damascus University. The authors assert that all procedures contributing to this work comply with the ethical standards of the relevant national and institutional committees on human experimentation and with the Helsinki Declaration of 1975, as revised in 2008. The objectives of the study were explained to the participants who were informed that their participation was voluntary and anonymous. An informed consent was obtained from all participants.
: While explaining the study and obtaining consent for participation, participants were told that the results of this research will be published in an international journal.
: The authors declare that they have no competing interests.
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