Funding for this research was provided by:
Partly funded by the Dutch Arthritis Association (8-1-306)
Received: 20 July 2018
Accepted: 12 November 2018
First Online: 19 December 2018
Ethics approval and consent to participate
: This study was approved by the Slotervaart ethics committee. Signed informed consent was obtained from all patients prior to inclusion.
: All authors gave their consent for publication.
: The authors declare that they have no competing interests.
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