1. Geriatric Medicine, Institute of Medicine, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
2. Department of Orthopaedics Sahlgrenska University Hospital Mölndal Sweden
3. Department of Clinical Chemistry and Department of Biomedical and Clinical Sciences Linköping University Linköping Sweden
4. Kungälvs Hospital Kungälv Sweden
5. Geriatric Medicine Clinic Sahlgrenska University Hospital Mölndal Sweden
6. Department of Endocrinology, Internal Medicine Sahlgrenska University Hospital Gothenburg Sweden
7. Mary MacKillop Institute for Health Research Australian Catholic University Melbourne Australia