Funding for this research was provided by:
National Science Centre (NCN) Poland (2013/09/B/NZ7/00405)
Uniwersytet Jagielloński w Krakowie (DS/MND/WBiNOZ/IZ/17/2016)
Received: 12 February 2018
Accepted: 14 March 2018
First Online: 30 March 2018
Compliance with Ethical Standards
: This article does not contain any studies with human participants or animals performed by any of the authors.
: The authors declare that they have no conflict of interest.