Schipmann, Stephanie http://orcid.org/0000-0002-9971-2256
Brix, Tobias
Varghese, Julian
Warneke, Nils
Schwake, Michael
Brokinkel, Benjamin
Ewelt, Christian
Dugas, Martin
Stummer, Walter
Article History
Received: 1 November 2018
Accepted: 24 December 2018
First Online: 11 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the local ethic committee. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all participants included in the study.
: None