Frings, Jannik
Krause, Matthias
Akoto, Ralph
Wohlmuth, Peter
Frosch, Karl-Heinz
Article History
Received: 8 November 2017
Accepted: 28 May 2018
First Online: 4 June 2018
Compliance with ethical standards
:
: All authors declare that they have no conflict of interest.
: Ethical approval was given by the ethics committee of the Medical Chamber of Hamburg, Germany (ID PV5191).