1. Lapeyronie University Hospital, Montpellier I University Hospital Montpellier France
2. University of California Los Angeles
3. University of Toronto Toronto Ontario Canada
4. Leiden University Medical Center Leiden The Netherlands
5. UCB Pharma Brussels Belgium
6. UCB Pharma Smyrna Georgia
7. Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, and National Institute for Health Research Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals National Health Service Trust Leeds UK