Text and Data Mining valid from 2019-01-25
Received: 13 October 2017
Accepted: 9 December 2018
First Online: 25 January 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Research Ethics Committee of the Faculty of Medicine, Benha University, that retrospectively approved the study on 6, March, 2018.All participants provided informed written consent to participate in the study.
: Not applicable
: The authors declare that they have no competing interests.
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