Weckmann, Julia
Scharf, Sven
Graf, Isabelle
Schwarze, Jörg
Keilig, Ludger
Bourauel, Christoph
Braumann, Bert
Article History
Received: 5 December 2018
Accepted: 12 September 2019
First Online: 13 December 2019
Compliance with ethical guidelines
:
: J. Weckmann, S. Scharf, I. Graf, J. Schwarze, L. Keilig, C. Bourauel and B. Braumann declare that they have no competing interests.
: For this article no studies with human participants or animals were performed by any of the authors. All studies performed were in accordance with the ethical standards indicated in each case.