Okorn, Christine
Goertz, Anne
Vester, Udo
Beck, Bodo B.
Bergmann, Carsten
Habbig, Sandra
König, Jens
Konrad, Martin
Müller, Dominik
Oh, Jun
Ortiz-Brüchle, Nadina
Patzer, Ludwig
Schild, Raphael
Seeman, Tomas
Staude, Hagen
Thumfart, Julia
Tönshoff, Burkhard
Walden, Ulrike
Weber, Lutz
Zaniew, Marcin
Zappel, Hildegard
Hoyer, Peter F.
Weber, Stefanie
Funding for this research was provided by:
German Federal Ministry of Research and Education (01GM1515)
Article History
Received: 14 May 2018
Revised: 6 November 2018
Accepted: 20 December 2018
First Online: 21 January 2019
Compliance with ethical standards
: The study was approved by the ethics committees of the University Duisburg-Essen and all collaborating institutions, according to the Declaration of Helsinki. Written informed consent was obtained.
: The authors declare that they have no conflict of interest.