Text and Data Mining valid from 2019-04-29
First Online: 29 April 2019
Compliance with Ethical Standards
: Eliane Sommerfeld declares that she has no conflict of interest. Shahar Malek declares that he has no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants (adolescents and parents) included in the study.