- Correspondence to Professor Kim Hørslev-Petersen, Institute of Regional Health Services Research, University of Southern Denmark, South Jutland Hospital, King Christian 10th Hospital for Rheumatic Diseases, Toldbodgade 3, Gråsten 6300, Denmark;
- Received September 26, 2012
- Revised December 28, 2012
- Accepted February 3, 2013
- First published February 23, 2013.
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