1. Royal North Shore Hospital and Institute of Bone and Joint Research, Kolling Institute, University of SydneySydney New South Wales Australia
2. Duke University School of MedicineDurham North Carolina
3. Orthopaedic and Arthritis Center for Outcomes Research, Brigham and Women's HospitalBoston Massachusetts
4. Boston University School of MedicineBoston Massachusetts
5. Boston University School of Medicine, Boston, Massachusetts, and University of ErlangenNuremberg Erlangen Germany
6. ImorphicsManchester UK
7. University of CaliforniaSan Francisco
8. Merck KGaADarmstadt Germany