Article History
Received: 6 November 2019
Accepted: 11 February 2020
First Online: 24 February 2020
Compliance with ethical standards
:
: Ahmed Elnaggar, Rami Makkar and Mohammed Ashraf declare that they have no conflict of interest.
: This study was reviewed and approved by the ethics committee at the Faculty of Medicine, Cairo University.
: Verbal and written informed patient consent were obtained.
: The authors received no financial support for the research and authorship of this article.