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Authors
Hussein, Osama
Abdelwahab, Khaled
Hamdy, Omar http://orcid.org/0000-0002-2924-4207
Awny, Shadi
Megahed, Nermin A.
Hafez, Mohamed T.
Elalfi, Amr F.
Abdelaziz, Mahmoud
Gaballah, Khaled
Abdelkhalek, Mohamed
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Article History
Received: 23 October 2019
Accepted: 6 January 2020
First Online: 17 January 2020
Ethics approval and consent to participate
: All procedures performed in the study were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments. This is a retrospective study for which a specific ethical committee approval is not needed.
: Not applicable
: All authors declare they have no conflict of interest
