Müller, Rainer
Zangger, Peter
Straumann, Dominik
Bögli, Stefan Y.
Article History
Received: 18 October 2021
Accepted: 4 February 2022
First Online: 12 February 2022
Declarations
:
: The study protocol was approved by the local ethics committee (cantonal ethics commission Zurich, BASEC-Nr. 2018–02017) and was in accordance with the ethical standards laid down in the 2013 Declaration of Helsinki for research involving human subjects. Informed consent was obtained from each subject — for both study participation and for publication of identifying images in an online open-access publication.
: Informed consent was obtained from each subject — for both study participation and for publication of identifying images in an online open-access publication.
: Dominik Straumann is an unpaid consultant of prolim GmbH. The other Authors have no conflicts.