- Correspondence to Dr Linda Fernandes, National Resource Center for Rehabilitation in Rheumatology, Diakonhjemmet Hospital, Postboks 23, Vinderen, Oslo 0319, Norway;
- Accepted 24 March 2013
- Published in print 1 July 2013.
- Published online 30 May 2013.
- Published first 17 April 2013.
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