1. Copenhagen University Hospital, Research Centre of Ageing and Osteoporosis, Department of Medicine, Glostrup, Denmark
2. University of Copenhagen, Faculty of Health Sciences, Glostrup, Denmark
3. Copenhagen University Hospital, Departments of Medicine, 2600 Glostrup, Denmark ;
4. Copenhagen University Hospital, Research Centre of Ageing and Osteoporosis, Department of Diagnostics, Glostrup, Denmark
5. University of Southern Denmark, Glostrup, Denmark