Funding for this research was provided by:
University Medical Centre Maribor (IRP-13-01-04)
Received: 16 November 2017
Accepted: 3 January 2018
First Online: 15 January 2018
Ethics approval and consent to participate
: The study was approved by the Ethics committee of the University Medical Centre Maribor, where it was conducted. Each patient signed an informed consent prior to the study enrollment.
: All the participants accepted with the initial written informed consent the possibility that the results of this study could be published.
: The authors declare that they have no competing interests.
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