Iseke, Anja
Pull, Kerstin
Article History
Received: 30 July 2016
Accepted: 4 July 2017
First Online: 15 July 2017
Compliance with Ethical Standards
:
: This article does not contain any studies with animals performed by any of the authors.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and 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.