Pfeufer, Daniel http://orcid.org/0000-0001-6780-3316
Zeller, Anne
Mehaffey, Stefan
Böcker, Wolfgang
Kammerlander, Christian
Neuerburg, Carl
Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (PF 939/1-0)
Friedrich-Baur-Stiftung (Ref.No. 29/16)
Article History
Received: 16 January 2019
First Online: 3 May 2019
Compliance with ethical standards
:
: The authors have no conflict of interest to declare.
: The local universities’ ethics committee approved this study (Ref. No.: 214-16). All participants gave written informed consent before data collection began.