Funding for this research was provided by:
Federation for the Humanities and Social Sciences (435-2015-0787)
Received: 9 August 2019
Accepted: 26 February 2020
First Online: 28 April 2020
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: Not applicable.