Spiekermann, Christoph http://orcid.org/0000-0002-0775-2788
Beule, Achim Georg
Rudack, Claudia
Stenner, Markus
Savvas, Eleftherios
Article History
Received: 10 August 2018
Accepted: 16 September 2018
First Online: 27 September 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments comparable ethical standards. The study was approved by the institutional ethics committee. This article does not contain any studies with animals performed by any of the authors.
: Informed consent was obtained from all individual participants included in the study.