1. Experimental Medicine and Endocrinology, Department of Experimental Medicine, K. U. Leuven, 300 Leuven, Belgium
2. Division of Geriatric Medicine, Leuven University Hospital, Leuven, 300 Leuven, Belgium
3. Gerontology and Geriatrics Section, Department of Experimental Medicine, K. U. Leuven, 300 Leuven, Belgium
4. Leuven University Centre for Metabolic Bone Diseases, 300 Leuven, Belgium
5. Molecular Endocrinology Laboratory, Department of Molecular Cell Biology, K. U. Leuven, 300 Leuven, Belgium
6. Laboratory for Experimental Medicine and Endocrinology, Leuven University Hospital, Herestraat 49, 300 Leuven, Belgium