- Correspondence to Professor Jonathan Kay, Division of Rheumatology, Department of Medicine, UMass Memorial Medical Center and University of Massachusetts Medical School, Memorial Campus, 119 Belmont Street, Worcester, MA 01605, USA;
- Received June 27, 2016
- Revised July 18, 2016
- Accepted July 31, 2016
- First published August 25, 2016.
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