Youssef, Ashraf Talaat
Article History
Received: 4 November 2017
Accepted: 5 February 2018
First Online: 3 March 2018
Compliance with ethical standards
:
: The author reports that he has no conflict of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions.
: Informed consent was obtained from all patients for being included in the study.