Funding for this research was provided by:
National Research, Development and Innovation Office - NKFIH (K115694)
European Union, co-financed by the European Social Fund (EFOP-3.6.3-VEKOP-16-2017-00002)
Article History
Received: 15 October 2017
Accepted: 30 December 2017
First Online: 16 January 2018