Braksiek, Michael http://orcid.org/0000-0003-0506-5906
Gröben, Bernd
Rischke, Anne
Heim, Christopher
Article History
Received: 18 May 2018
Accepted: 24 September 2018
First Online: 12 October 2018
Compliance with ethical guidelines
:
: M. Braksiek, B. Gröben, A. Rischke and C. Heim declare that they have no competing interests.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee 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.