Purtskhvanidze, K.
Balken, L.
Hamann, T.
Wöster, L.
von der Burchard, C.
Roider, J.
Treumer, Felix http://orcid.org/0000-0003-2664-7040
Article History
Received: 11 October 2017
Revised: 6 March 2018
Accepted: 26 March 2018
First Online: 6 April 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee (ethics committee of Christian-Albrechts-University Kiel) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.