1. Department of Rheumatology, Falun Hospital, Centre for Clinical Research, Dalarna, Uppsala University, Falun, Sweden
2. UCB Pharma, Stockholm, Sweden
3. Department of Rheumatology, Lund University
4. Quantify Research, Stockholm, Sweden
5. Cytel, London, England, United Kingdom
6. Cytel, Rotterdam, Netherlands
7. UCB Pharma, Brussels, Belgium