Beez, Thomas http://orcid.org/0000-0002-8715-5237
Steiger, Hans-Jakob
Article History
Received: 3 February 2018
Revised: 3 March 2018
Accepted: 12 March 2018
First Online: 19 March 2018
Compliance with ethical standards
:
: This study was performed in accordance with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Informed consent was not required, as this study did not directly involve patients, but was based on anonymous data, which is in similar form publicly available in legally required annual hospital quality reports.
: The authors declare that they have no conflict of interest.