- Correspondence to 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 October 31, 2014
- Revised December 16, 2014
- Accepted January 13, 2015
- First published March 4, 2015.
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