Poór, Viktor S.
Lukács, Dénes
Nagy, Tamás
Rácz, Evelin
Sipos, Katalin
Article History
Received: 7 May 2015
Accepted: 17 November 2015
First Online: 25 November 2015
Compliance with ethical standards
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: The authors declare that they have no competing interests.