El-Taher, Mostafa https://orcid.org/0000-0002-8685-8256
Aref, Zaki
Article History
Received: 12 August 2017
Accepted: 21 August 2017
First Online: 30 August 2017
Compliance with Ethical Standards
:
: Both authors declare that they have no conflict of interest.
: All procedures performed in this study were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from all individual participants included in the study.