Article History
Received: 1 November 2018
Accepted: 28 January 2019
First Online: 7 February 2019
Compliance with ethical standards
: The study complies with the Guide for the Care and Use of Laboratory Animals published by the National Institutes of Health (NIH Publications No. 8023, revised 1978) and is approved by the Ethics Committee of Faculty of Pharmacy, Al-Azhar University.
: The authors declare that they have no conflict of interest.