- Correspondence to Dr Hyon K Choi, Division of Rheumatology, Allergy, and Immunology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Bulfinch 165, Boston, MA 02114, USA;
- Received August 25, 2014
- Revised January 14, 2015
- Accepted January 15, 2015
- First published February 9, 2015.
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