Funding for this research was provided by:
Vedeck? Grantov? Agent?ra M?VVa? SR a SAV (1/0234/18)
Article History
Received: 5 September 2018
Revised: 19 December 2018
Accepted: 27 December 2018
First Online: 26 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: 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.
: Informed consent was obtained for each patient. The study was approved by the local ethics committee (Ethical committee of the University Hospital Bratislava, Slovakia).