Viefhaus, Paula
Döpfner, Manfred
Dachs, Lydia
Goletz, Hildegard
Görtz-Dorten, Anja
Kinnen, Claudia
Perri, Daniela
Rademacher, Christiane
Schürmann, Stephanie
Woitecki, Katrin
Metternich-Kaizman, Tanja Wolff
Walter, Daniel http://orcid.org/0000-0002-2430-7117
Article History
Received: 18 May 2018
Accepted: 30 August 2018
First Online: 6 September 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study has been approved by the ethics committee at the University of Cologne and has, therefore, been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All persons gave their informed consent prior to their inclusion in the study.