Ethics approval and consent to participate
Ethical considerationsThis research was performed in accordance with the Declaration of Helsinki. This study has the approval of the ethics committee of Tehran University of Medical Sciences (code: IR.TUMS.FNM.REC.1398.181), and was registered in the Thailand Clinical Trials Registry (code: TCTR20200517001). We provided participants with information about the aim and methods of the study, confidentiality of their data, voluntariness of participation in and withdrawal from the study, and users of the study findings. After being informed of the benefits and risks of research, Informed consent was obtained from all subjects or their legal guardian(s).At the end of the study, educational materials were provided to participants in the control group in a single session and also through a stress management for adolescents’ pamphlet.