Received: 28 November 2019
Accepted: 2 December 2019
First Online: 10 December 2019
Ethics approval and consent to participate
: The study has been approved by the “Ethical Committee of Faculty of Medicine, Cairo University”, in compliance with Helsinki Declaration. A written consent was obtained from the included patients.This study was not issued a reference number by the ethical committee because back then, the approving committee did not apply issuing serial numbers.
: All the included patients signed an informed consent to publish the data contained within this study.
: The authors declare that they have no competing interests.