1. Department of Rheumatology and Inflammation Research (H.F.-d’E., H.C.), Sahlgrenska Academy at University of Gothenburg, SE-413 46 Gothenburg, Sweden
2. COXA Hospital for Joint Replacement, 33101 Tampere, Finland
3. Laboratory of Molecular Endocrinology and Oncology (F.L.), Laval University Hospital Research Center (CRCHUL) and Laval University, Quebec, Canada G1V 4G2
4. Department of Medicine (Y.T.K.), Institute of Clinical Medicine, Helsinki University Central Hospital, 00290 Helsinki, Finland
5. ORTON Orthopedic Hospital of the Invalid Foundation (Y.T.K.), 00280 Helsinki, Finland
6. Department of Internal Medicine (C.O.), Sahlgrenska Academy at University of Gothenburg, SE-413 45 Gothenburg, Sweden