Funding for this research was provided by:
Deutsche Gesellschaft für Zahn-, Mund- und Kieferheilkunde
Article History
Received: 3 May 2017
Accepted: 11 June 2018
First Online: 29 June 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not include any studies with human participants or animals performed by any of the authors.
: There was no need to obtain informed consent, as no individual participants were involved in this study.