Submitted on: 22 October 2018.
Revised on: 18 November 2018.
Accepted on: 30 November 2018.
SCANDINAVIAN JOURNAL OF RHEUMATOLOGY
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Submitted on: 29 January 2007.
Revised on: 11 March 2007.
Accepted on: 17 March 2007.
SCANDINAVIAN JOURNAL OF RHEUMATOLOGY