Gazzotti, A.
Meyer, U. http://orcid.org/0000-0002-0040-2988
Freystaetter, G.
Palzer, M.
Theiler, R.
Abderhalden, L. http://orcid.org/0000-0001-5668-2854
Bischoff-Ferrari, H. A. http://orcid.org/0000-0002-4554-658X
Article History
Received: 12 March 2019
Accepted: 11 June 2019
First Online: 8 July 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The local ethics committee has approved the study.
: We only included data of patients who gave written general consent to use their data for research.