Hetta, Waleed M. http://orcid.org/0000-0002-2453-7449
Atyia, Hany Rafat
Article History
Received: 11 December 2019
Accepted: 3 February 2020
First Online: 13 February 2020
Ethics approval and consent to participate
: The study was done after the approval of the ethical board of Ain Shams University (the reference number is not applicable), and an informed written consent was taken from each participant in the study.
: Written consent for publication was taken from all the participants.
: The authors declare that they have no competing interests.