Wilhelm, Claudia
Joeckel, Sven
Article History
First Online: 31 July 2018
Compliance with Ethical Standards
:
: We have no conflicts of interest to disclose.
: Informed consent was obtained from all individual participants included in the study.
: All procedures performed in this study involving human participants followed the procedural requirements for ethical research with human subjects of the University of Erfurt. Research procedures were in accordance with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.