Funding for this research was provided by:
Competitive State Research Financing of the Expert Responsibility area of Tampere University Hospital
Received: 2 December 2017
Accepted: 3 August 2018
First Online: 21 August 2018
Ethics approval and consent to participate
: The study was approved by the Regional Ethics Committee of Tampere University Hospital in November 2011. All participants will provide a written consent to participate.
: Not applicable.
: All authors have completed the ICMJE uniform disclosure form at ExternalRef removed and declare: no support from any organization for the submitted work; HH has been paid for educational presentations and travel expenses by DePuySynthes and Stryker. The authors declare that they have no competing interests.
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