Thiering, Gergő http://orcid.org/0000-0003-3357-5583
Gali, Adam http://orcid.org/0000-0002-3339-5470
Article History
Received: 17 August 2018
Accepted: 24 January 2019
First Online: 12 February 2019
Competing interests
: The authors declare no competing interests.