1. Department of Internal Medicine, Division of Endocrinology, Leiden University Medical Center, Leiden, The Netherlands
2. Center for Bone Quality, Leiden University Medical Center, Leiden, The Netherlands
3. Department of Clinical Epidemiology, Leiden University Medical Center, Leiden, The Netherlands
4. Department of Physical Therapy, Leiden University Medical Center, Leiden, The Netherlands
5. Department of Rheumatology, Zuyderland Ziekenhuis, Heerlen, The Netherlands
6. Department of Orthopaedics, Rehabilitation and Physical Therapy, Leiden University Medical Center, Leiden, The Netherlands