Pokrotnieks, Juris
Sitkin, Stanislav http://orcid.org/0000-0003-0331-0963
Article History
Received: 15 November 2017
Accepted: 26 December 2017
First Online: 3 April 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest. Authors must indicate whether or not they have/had a financial relationship (within the last 3 years) with any organization that sponsored the research. They should also confirm that they have full control of all primary data and they agree to allow the journal to review their data if requested.