- Correspondence to Dr Kenneth C Kalunian, Rheumatology, Allergy, and Immunology, UC San Diego School of Medicine, 9500 Gilman Drive, La Jolla, CA 92093-0943, USA;
- Received June 13, 2014
- Revised March 6, 2015
- Accepted March 22, 2015
- First published June 2, 2015.
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