Domanska, Olga Maria http://orcid.org/0000-0003-2831-3351
Firnges, Christiane
Bollweg, Torsten Michael
Sørensen, Kristine
Holmberg, Christine
Jordan, Susanne
Funding for this research was provided by:
the German Federal Ministry of Education and Research (01EL1424D)
Article History
Received: 20 October 2017
Accepted: 5 June 2018
First Online: 10 July 2018
Ethics approval and consent to participate
: The study was approved by the Federal Commissioner for Data Protection and Freedom of Information, Germany. Participants, as well as their parents or legal guardians, were informed about the study objectives, the interview process, and the applicable data protection guidelines (anonymous data processing and record keeping). Written informed consent was obtained from each participant and her/his parents or legal guardians.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.