Funding for this research was provided by:
Foundation for Economic Education
Marcus Wallenbergin säätiö
Received: 1 August 2016
Accepted: 25 March 2018
First Online: 6 April 2018
Compliance with Ethical Standards
: The authors declare that they have no conflict 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 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.