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Authors
El Hefnawy, Emad
Alrefaey, Alrefaey K. http://orcid.org/0000-0001-6580-4008
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Article History
Received: 9 August 2018
Accepted: 16 November 2018
First Online: 4 December 2018
Ethics approval and consent to participate
: Approval of institutional research board (R/16.12.76) and clinical trials registry (ClinicalTrials.gov ID: NCT03006640) were obtained prior to start of the study.
: 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.
