Document is current

Article History

Received: 17 October 2018

Accepted: 2 January 2019

First Online: 10 January 2019

Ethics approval and consent to participate

: All subjects provided informed consent to study participation. Studies were performed in accordance with the approval (4022) of the Regional Research Ethics Committee of the Medical Center, Pécs.

: Publication is accepted by all authors.

: The authors declare that they have no competing interests.

: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.