Article History
Received: 19 September 2018
Accepted: 5 January 2019
First Online: 18 January 2019
Compliance with ethical standards
: All subjects signed written informed consent and the study was approved by the local ethical committee (602-01/17-01-147) and registered in the ExternalRef removed (ExternalRef removed).
: The authors declare that they have no conflicts of interest.
: The authors alone are responsible for the content and writing of the paper.