Received: 9 August 2019
Accepted: 24 September 2019
First Online: 2 December 2019
Ethics approval and consent to participate
: Written informed consent was signed by all patients before the examination. The study was approved by the research committee of the Faculty of Medicine, Cairo University.
: All patients included in this research were fully conscious and older than 16 years old and gave written informed consent.
: The authors declare that they have no competing interests.