Document is current

Article History

Received: 27 January 2018

Accepted: 2 August 2018

First Online: 10 August 2018

Ethics approval and consent to participate

: The research was approved by the University Hospital Osijek (reference number 25–1: 11425–3/2015). All participants were informed of the study’s objectives and assurance of anonymity and have signed an informed consent form.

: Not applicable.

: The authors declare that they have no competing interests.

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