Omari, Tahar http://orcid.org/0000-0001-9802-7436
Bereksi-Reguig, Fethi
Article History
Received: 13 October 2018
Revised: 3 May 2019
Accepted: 6 May 2019
First Online: 7 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in these studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the Helsinki declaration and its later amendments or comparable ethical standards. The following ethical issues were honored
: The participants were informed about the purpose of the study and their participation. The participants were also informed that their participation was voluntary and that they were free to withdraw their participation at any time.
: In order to ensure confidentiality and anonymity, the identity ofthe participants was kept anonymous. To this effect, a fictitiousnames were used.
: was sought from the department principal to allow the use ofnecessery materials needed for the succes of our experiments.