Received: 27 November 2019
Accepted: 28 January 2020
First Online: 4 February 2020
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of the Faculty of Medicine at Ain Shams University in Egypt on 2 October 2019, reference number of approval FWA 000017585. All patients included in this study gave written informed consent to participate in this research. If the patient was unconscious at the time of the study, written informed consent for their participation was given by their legal guardian.
: All patients included in this research gave written informed consent to publish the data contained within this study. If the patient was unconscious when consent for publication was requested, written informed consent for the publication of this data was given by their legal guardian.
: The authors declare that they have no competing interest.