[1] Katholieke Univ Leuven, Skeletal Biol & Engn Res Ctr, Leuven, Belgium
[2] Katholieke Univ Leuven, Dept Chron Dis & Metab, Clin & Expt Endocrinol, Leuven, Belgium
[3] UZ Leuven, Rheumatol, Leuven, Belgium
[4] VUB Vrije Univ Brussel, Biostat & Med Informat Res Grp, Dept Publ Hlth, Bldg B, Elsene, Belgium