Kalenka, Armin
Gruner, Felix
Weiß, Christel
Viergutz, Tim
Article History
Received: 17 February 2016
Accepted: 2 May 2016
First Online: 12 May 2016
Compliance with Ethical Standards
:
: Armin Kalenka has been a consultant for GE Healthcare and received lecture fees. The other authors declare that they have no conflict of interest.