- 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 April 29, 2014
- Revised August 8, 2014
- Accepted August 10, 2014
- First published October 2, 2014.
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