Received: 20 November 2019
Accepted: 26 November 2019
First Online: 7 January 2020
Ethics approval and consent to participate
: The study was approved by the ethical committee of Al Maadi Egyptian military hospital on January 2014 (no reference number was given at that time). Written consent for participation in the study was obtained from all patients or relatives of patients.
: Written informed consent for publication of the study was obtained from the patients themselves.
: This statement is to certify that all authors have seen and approved the manuscript being submitted. We warrant that the article is the authors’ original work. We warrant that the article has not received prior publication and is not under consideration for publication elsewhere. On behalf of all co-authors, the corresponding author shall bear full responsibility for the submission.