Funding for this research was provided by:
European Research Council (636116)
Text and Data Mining valid from 2018-01-10
Received: 5 July 2017
Accepted: 2 January 2018
First Online: 10 January 2018
Compliance with ethical standards
: Vincent Hoofs, Thomas Carsten, C. Nico Boehler, and Ruth M. Krebs declare that they have no conflicts of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.