Zumofen, Daniel W.
,
Roethlisberger, Michel
Achermann, Rita
Bawarjan, Schatlo
Stienen, Martin N.
Fung, Christian
D’Alonzo, Donato
Maldaner, Nicolai
Ferrari, Andrea
Corniola, Marco V.
Schoeni, Daniel
Goldberg, Johannes
Valsecchi, Daniele
Robert, Thomas
Maduri, Rodolfo
Seule, Martin
Burkhardt, Jan-Karl
Marbacher, Serge
Bijlenga, Philippe
Blackham, Kristine A.
Bucher, Heiner C.
Mariani, Luigi
Guzman, Raphael
Article History
Received: 19 December 2017
Revised: 25 January 2018
Accepted: 28 January 2018
First Online: 10 February 2018
Compliance with ethical standards
:
: Internal Review Board (IRB) and Ethical Committee approval were obtained for all participating centers (under the supervision of the Geneva ethical committee board no. 11-233R, NAC 11-085R). Most local Ethic Committees waived the need for obtaining written informed consent (justification: disproportionality). Written informed consent was obtained however from all participating patients for both the retrospective collection of data in 2009 and the prospective collection of data from 2010 onward if the local Ethic Committee had requested it. As of 2014 (implementation of the new Swiss Human Research Act), written informed consent was obtained from all participating patients in all participating centers. Consent to publish: No consent to publish from the participants to report individual patient data was obtained as no individual participant’s data in any form will be published.
: This study was a retrospective analysis of a prospectively collected database and does not require clinical trial registration.
: The authors declare that they have no conflict of interest.
: Our results are reported as recommended in the STrengthening the Reporting of OBservational studies in Epidemiology (STROBE) statement.
: The datasets used and/or analyzed during the present study are available from the corresponding author on reasonable request. Previous presentation: Preliminary results of this study were presented in form of a poster and abstract at the Joint Annual Meeting of the Swiss Society of Neurosurgery and the Swiss Society of Neuroradiology, September 2015, Lucerne, Switzerland.