Schwendicke, Falk
Nitschke, Ina
Stark, Helmut
Micheelis, Wolfgang
Jordan, Rainer A.
Funding for this research was provided by:
Bundeszahnärztekammer und KZBV
Article History
Received: 9 July 2018
Accepted: 19 March 2020
First Online: 3 April 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in DMS 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 individual participants included in the study.