Received: 7 June 2019
Accepted: 26 July 2019
First Online: 6 September 2019
Ethics approval and consent to participate
: Written informed consent was signed by all patients before the examination. The study was approved by the ethics committee of faculty of medicine, Cairo University.
: All patients included in this research were fully conscious and older than 16 year old and gave written informed consent to publish the data contained within this study.
: The authors declare that they have no competing interests.