Montavon, Céline
Stricker, Gregor R.
Schoetzau, Andreas
Heinzelmann-Schwarz, Viola
Jacob, Francis
Fedier, André http://orcid.org/0000-0002-5613-8629
Article History
Received: 3 September 2019
Accepted: 19 September 2019
First Online: 4 October 2019
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: Ethics approval was obtained from the Swiss Ethical Cantonal Department SPUK (approval #StV06/2006) and the Ethical Committee of Nordwest- und Zentralschweiz, Switzerland (EKNZ 2015 ± 436). Neither written nor oral consent was necessary for this retrospective study and data accession was anonymous. The whole study was performed according to the Declaration of Helsinki and local laws and regulations.