Vu-Eickmann, Patricia
Li, Jian
Müller, Andreas
Angerer, Peter
Loerbroks, Adrian http://orcid.org/0000-0003-2795-8684
Funding for this research was provided by:
Research Commission of the Medical Faculty of the University of Düsseldorf
Article History
Received: 13 December 2017
Accepted: 18 April 2018
First Online: 24 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 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.