[1] CHU Ctr Ville, Bone & Cartilage Metab Res Unit, Policlin L BRULL, B-4020 Liege, Belgium
[2] Univ Libre Bruxelles, Dept Med, CHU Brugmann, Brussels, Belgium
[3] Univ Libre Bruxelles, Dept Radioisotopes, CHU Brugmann, Brussels, Belgium
[4] Katholieke Univ Leuven, Ctr Metab Bone Dis, Louvain, Belgium
[5] Catholic Univ Louvain, Dept Rheumatol, Mont Godinne Univ Hosp, B-1200 Brussels, Belgium
[6] Catholic Univ Louvain, Dept Rheumatol, St Luc Univ Hosp, B-1200 Brussels, Belgium
[7] Univ Ghent, Dept Rheumatol & Endocrinol, B-9000 Ghent, Belgium
[8] State Univ Gent, Dept Endocrinol, Ghent, Belgium
[9] Univ Libre Bruxelles, Dept Gynaecol Obstet, Brussels, Belgium
[10] Univ Liege, Dept Publ Hlth Epidemiol & Hlth Econ, Liege, Belgium