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Article History

Received: 30 June 2018

Accepted: 22 December 2018

First Online: 18 January 2019

Ethics approval and consent to participate

: The study was approved by the ethics committee of the Medical Faculty at the University of Heidelberg (S-086/2018; leading study site). Subsequently, ethical approval is sought at all responsible study sites recruiting participants (Hamburg, Leipzig, Marburg, Schwäbisch Gmünd). The <i>StresSOS</i> trial was approved by the ethics committee of the University of Education Schwäbisch Gmünd, Germany, on 7 May 2018. Written informed consent will be obtained from all participating adolescents and their parents/caregivers/legal substitute prior to inclusion. All participants must agree to participate voluntarily and will be free to withdraw from the study at any time without giving a reason. Internet-based platforms to assess data and to deliver the interventions will follow latest regulations concerning data security. All collected information will be confidential and held in accordance with ICH-GCP.

: Not applicable.

: The authors declare that they have no competing interests.

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