Received: 16 December 2019
Accepted: 17 March 2020
First Online: 30 March 2020
Ethics approval and consent to participate
: This study was ethically approved by the ethical committee of MRI and the Faculty of Medicine in Alexandria University [IRB No. 00007555 - FWA No. 00015712]. Patients and their relatives were informed about the objective of the study and their consents were taken prior to the inclusion of this study.It was an informed written consent that was obtained from all participants prior to their inclusion in the study, according to the ethical guidelines of the Medical Research Institute Alexandria University (Informed Written Consent for patient participation in a Clinical Research 2011).
: Before inclusion in this study, patients and their relatives were informed that this work will be presented as dissertation in Alexandria University and then published.
: The authors declare that they have no competing interests.