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Authors
Hakim, Karim Youssef Kamal http://orcid.org/0000-0003-2586-5134
Wahba, Wahba Zakaria
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Article History
Received: 21 August 2018
Accepted: 31 January 2019
First Online: 26 February 2019
Ethics approval and consent to participate
: The study protocol was approved by Ain Shams University ethics committee. Informed written consent was taken from each patient.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
