Funding for this research was provided by:
Software AG STiftung (NN)
Raeschke Stiftung (NN)
First Online: 23 November 2018
Compliance with Ethical Standards
: Participants in this research were only the authors of the research article. No further participants were involved. Participation in this project involved no risks that went beyond the risks of normal life.
: We have no conflict of interest to declare.