Van Quaquebeke, Niels
Becker, Jan U.
Goretzki, Niko
Barrot, Christian
Article History
Received: 21 October 2016
Accepted: 14 May 2017
First Online: 22 May 2017
Compliance with Ethical Standards
:
: All authors declare that there are no conflicts of interest.
: All procedures performed in these studies that involved human participants aligned with the ethical standards of the institutional and/or national research committee, as well as with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: All individual participants in the studies provided informed consent.