Ahmadi, Farid
Ahmadi, Soheila
Article History
First Online: 28 October 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest.
: This study was conducted in accordance with the Declaration of Helsinki on ethical principles for medical research involving human participants. Ethics approval for this study was obtained from the Institutional Ethics Committee.
: First, written consent was obtained from the ministry of education and principals of schools. Then, verbal consent has been obtained from all participants after the study objectives were explained. Finally, they were invited to complete the anonymous survey material voluntarily and they were free to withdraw at any time without giving a reason.