- Correspondence to Professor Jonathan Kay, Division of Rheumatology, Department of Medicine, UMass Memorial Medical Center and University of Massachusetts Medical School, Worcester, MA 01605, USA;
- Received 15 June 2017
- Revised 20 July 2017
- Accepted 12 August 2017
- Published in print 5 September 2017.
- Published first 2 September 2017.
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