Becker, Roland
Bäker, Katharina
Hommel, Hagen
Bernard, Manfred
Kopf, Sebastian
Article History
Received: 12 November 2017
Accepted: 4 May 2018
First Online: 16 May 2018
Compliance with ethical standards
:
: I have no potential conflict of interest.
: The study was approved by the ethical committee of the Medical Council of Brandenburg, Germany (AS 67(bB)/2014).