Funding for this research was provided by:
Hungarian National Research Fund (OTKA K106172)
European Union, co-financed by the European Social Fund (SROP-4.2.2.B-15/1/KONV-2015-0001)
Article History
Received: 30 July 2016
Revised: 10 September 2016
Accepted: 13 September 2016
First Online: 27 September 2016
Compliance with ethical standards
:
: The authors declare no conflict of interest.
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