Funding for this research was provided by:
Hungarian Scientific Research Fund (GINOP 2.3.2-15-2016-00047)
Received: 29 April 2020
Accepted: 1 May 2020
First Online: 17 August 2020
Ethics approval and consent to participate
: The ethical approval was granted for the study by Ethics Committee of University of Pécs. (6955/2017). The participants were informed about the research aim and methods before signing the informed consent form. The investigation conforms to the principles outlined in the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.