1. Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Biomedical Research Centre, Leeds, UK. p.conaghan@leeds.ac.uk
2. Kantar, NY, USA.
3. Kantar, Tel Aviv, Israel.
4. Pfizer Ltd., Budapest, Hungary.
5. Pfizer Ltd., Surrey, UK.
6. Eli Lilly and Company, Indianapolis, IN, USA.
7. Pfizer Ltd., Groton, CT, USA.
8. Pain Center, Cochin Hospital, Paris Descartes University, Paris, France.