Funding for this research was provided by:
Else Kröner-Fresenius-Stiftung (Else Kröner Memorial Scholarship)
Received: 19 July 2019
Revised: 14 November 2019
Accepted: 11 December 2019
First Online: 21 February 2020
Compliance with ethical standards
: The scientific guarantors of this publication are Dr. Philipp Kickingereder, MBA and Dr. Ulf Neuberger.
: Dr. Nagel received grants, personal fees, and other from Brainomix; personal fees and other from Bayer, personal fees and other from Bohringer Ingelheim; personal fees and other from Medtronic; and personal fees from Pfizer outside of submitted work. Dr. Pfaff has received payment for lectures from the University of Hamburg-Eppendorf and Asklepios Arzteakademie; travel and meeting expenses from Stryker and MicroVention Deutschland. Dr. Bendszus has received grants and personal fees from Novartis, Guerbet, and Codman; personal fees from Vascular Dynamics, Roche, Teva, Springer, and Bayer Vital; grants from Siemens and Hopp Foundation. DFG. Dr. Mohlenbruch has received personal fees from Codman, MicroVention, Phenox, and Stryker. Dr. Herweh received personal fees form Brainomix.The other authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.
: One of the authors has significant statistical expertise.
: Written informed consent was waived by the Institutional Review Board.
: Institutional Review Board approval was obtained at the local ethics committee of the medical faculty of the University of Heidelberg.
: • Retrospective• Diagnostic or prognostic study• Performed at one institution