- Correspondence to Dr Gunnel Nordmark, Rheumatology and Science for Life Laboratory, Department of Medical Sciences, Uppsala University, Uppsala SE-751 85, Sweden;
- Received 25 September 2015
- Revised 11 January 2016
- Accepted 16 January 2016
- Published in print 1 November 2016.
- Published online 11 October 2016.
- Published first 8 February 2016.
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