Text and Data Mining valid from 2018-08-31
Received: 25 February 2018
Accepted: 8 July 2018
First Online: 31 August 2018
Ethics approval and consent to participate
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the Egyptian National Research Committee. The local ethical committee of the Alexandria Faculty of Medicine approved this study with approval reference number of (0303823) dated January 18, 2018.Consent for participation is not applicable as this is a retrospective study.
: Informed consents for publication were obtained from all individual participants included in the study.
: The authors declare that he have no competing interests.
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