Abdel-Rahman, Omar http://orcid.org/0000-0002-5117-2502
Article History
Accepted: 5 February 2020
First Online: 14 February 2020
Compliance with ethical standards
:
: The author declares that he has no conflict of interest.
: All procedures performed in studies involving human participants were following the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: As this study is based on a publicly available database without identifying patient information, informed consent was not needed.