Engel, Julia
van Kampen, Vera
Lotz, Anne
Abramowski, Jessica
Gering, Vitali
Hagemeyer, Olaf
BrĂ¼ning, Thomas
Raulf, Monika
Merget, Rolf http://orcid.org/0000-0002-0580-7597
Article History
Received: 2 November 2017
Accepted: 22 May 2018
First Online: 30 May 2018
Compliance with ethical standards
:
: All procedures performed in this study 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 participants for being included in the study.
: The authors declare that they have no conflict of interest.