Rohleder, Cathrin
Koethe, Dagmar
Fritze, Stefan
Topor, Cristina E.
Leweke, F. Markus
Hirjak, Dusan
Article History
Received: 27 August 2017
Accepted: 13 March 2018
First Online: 19 March 2018
Compliance with ethical standards
:
: The authors have declared that there are no conflicts of interest in relation to the subject of this study.
: This study has been approved by the appropriate ethics committee and has, therefore, been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.