Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (FZT 118, FOR 456, FOR 1451 – “The Jena Experiment”)
Article History
Received: 1 September 2017
Accepted: 30 December 2017
First Online: 19 January 2018
Compliance with ethical standards
:
: The authors declare that there is no conflict of interest.