Received: 2 October 2018
Accepted: 13 January 2019
First Online: 25 January 2019
Ethics approval and consent to participate
: A written informed consent was obtained from each participant in this study and the study was approved by the authorized ethical committee in Faculty of medicine, Beni-Suef University (FWA00015574) in 3-7-2018.
: Not applicable.
: The authors declare that they have no competing interests.
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