Riffer, Friedrich
Sprung, Manuel https://orcid.org/0000-0003-0315-0912
Münch, Hannah
Kaiser, Elmar
Streibl, Lore
Heneis, Kathrin
Kautzky-Willer, Alexandra
Article History
Received: 13 March 2019
Accepted: 11 November 2019
First Online: 9 December 2019
Compliance with ethical guidelines
:
: F. Riffer, M. Sprung, H. Münch, E. Kaiser, L. Streibl, K. Heneis, and A. Kautzky-Willer declare that they have no competing interests.
: The present study was a retrospective analysis of data collected as part of routine clinical care and outcome evaluation, therefore approval by an ethics committee was not required; however, all procedures followed were in accordance with the ethical standards of the Helsinki Declaration of 1975 as revised in 2008. Informed consent was obtained from all individual participants included in the study.