Thangarajah, Fabinshy http://orcid.org/0000-0002-1458-7303
Baur, Christina
Hamacher, Stefanie
Mallmann, Peter
Kirn, Verena
Article History
Received: 19 July 2017
Accepted: 23 January 2018
First Online: 3 February 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 research committee (Ethics Committee of the University Hospital of Cologne) 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.