Bollmann, Jakob
Bergdolt, Christian
Aldinger, Peter R.
Maier, Michael W.
Gotterbarm, Tobias
Merle, Christian http://orcid.org/0000-0002-9873-666X
Article History
Received: 2 July 2018
Accepted: 9 November 2018
First Online: 13 December 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.All study procedures involving human participants were in accordance with the ethical standards of the institutional research committee of the University of Heidelberg and with the 1964 Helsinki declaration and its later amendments or comparable ethical standard.
: Informed consent was obtained from all individual participants included in the study.