- Correspondence to Dr Francisco J Blanco, Rheumatology Division, CIBER-BBN/ISCIII, INIBIC-Hospital Universitario A Coruña, Xubias de Arriba 84, A Coruña 15006, Spain;
- Received July 6, 2013
- Revised September 12, 2013
- Accepted October 26, 2013
- First published November 13, 2013.
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