- Correspondence to Dr Francisco J Blanco, Rheumatology Division, INIBIC-Hospital Universitario A Coruña, Xubias, 84, A Coruña, A Coruña 15006, Spain;
- Received November 25, 2012
- Revised January 15, 2013
- Accepted February 3, 2013
- First published February 26, 2013.
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