Ruber, Joachim
Geist, Juergen
Hartmann, Manuela
Millard, Andrew
Raeder, Uta
Zubkov, Mikhail
Zwirglmaier, Katrin
Funding for this research was provided by:
Frank Hirschvogel Stiftung
Deutsche Forschungsgemeinschaft
Article History
Received: 15 February 2017
Revised: 22 August 2017
Accepted: 24 August 2017
First Online: 2 September 2017
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.