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Article History

Received: 15 March 2018

Accepted: 28 March 2019

First Online: 7 May 2019

Ethics approval and consent to participate

: The VISK study was approved by the Medical Ethics Committee of the Erasmus University Medical Centre in Rotterdam (approval number NL24430.078.08). The study was performed in compliance with the Declaration of Helsinki and Good Clinical Practice guidelines. Written informed consent was obtained from every subject included in the study.

: Not applicable.

: Next to his employment as an orthopaedic surgeon at the Department of Orthopaedic Surgery of the Reinier de Graaf Hospital in Delft (The Netherlands), DN is a consultant orthopaedic surgeon for Zimmer Medical. This company was not involved in any part of the study. SBZ, PB, JV and MR are all employed by the Erasmus University Medical Centre Rotterdam and due to the nature of their work they are involved in several other study projects funded by research grants.No financial support or other benefits from commercial sources or any other financial interests that any of the other authors may have, which could create a potential conflict of interest or the appearance of a conflict of interest with regard to the work, are reported for this article by any of the authors.

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