Güldenpenning, Iris http://orcid.org/0000-0003-0549-5543
Alaboud, Mustafa Alhaj Ahmad
Kunde, Wilfried
Weigelt, Matthias
Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (GU 1683/1-1)
Deutsche Forschungsgemeinschaft (KU 1964/13-1)
Article History
Received: 2 August 2017
Accepted: 22 January 2018
First Online: 27 February 2018
Compliance with ethical guidelines
:
: I. Güldenpenning, M. Alhaj Ahmad Alaboud, W. Kunde, and M. Weigelt 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.