Received: 20 March 2019
Accepted: 26 February 2020
First Online: 16 March 2020
Ethics approval and consent to participate
: All procedures performed in the study were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments. The study was ethically approved by the research committee and reviewed by the Faculty of Medicine Cairo University board (clinical trial number NCT02854384) registration date January 2015.
: Written informed consent was obtained from all participants involved in this investigation prior to the conduct of any study-related activities.
: The authors declare that they have no competing interests (financial and non-financial).