Jaecker, Vera
Drouven, Sabrina
Naendrup, Jan-Hendrik
Kanakamedala, Ajay C.
Pfeiffer, Thomas
Shafizadeh, Sven
Article History
Received: 23 November 2017
First Online: 28 May 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Institutional review board approval was obtained by the ethics committee of Witten/Herdecke University (IRB Number: 109/2016).