- Correspondence to Dr Ulf Lindström, Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Guldhedsgatan 10A, Gothenburg 405 30, Sweden;
- Received December 7, 2016
- Revised February 1, 2017
- Accepted February 11, 2017
- First published March 2, 2017.
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