Funding for this research was provided by:
Bundesministerium für Wirtschaft und Energie (AiF 19543 N)
Article History
Received: 2 September 2019
Accepted: 1 November 2019
First Online: 21 November 2019
Compliance with Ethical Standards
:
: Katrin Reichenberger declares that she has no conflict of interest. Anja Luz declares that she has no conflict of interest. Ines Seitl declares that she has no conflict of interest. Lutz Fischer declares that he has no conflict of interest.
: This study does not contain experiments that involve human or animals other than the authors who performed the work.
: All authors have read the manuscript and agreed upon its submission to the journal.