1. Department of Orthopaedic SurgeryRegion Västra Götaland, Skaraborg Hospital Skövde Sweden
2. Geriatric MedicineInstitute of Medicine, Sahlgrenska Academy, University of Gothenburg Gothenburg Sweden
3. Mary McKillop Institute for Health ResearchAustralian Catholic University Melbourne Australia
4. Department of Natural Science and BiomedicineSchool of Health and Welfare, Jönköping University Jönköping Sweden
5. Region Västra Götaland, Department of OrthopaedicsSahlgrenska University Hospital Gothenburg Sweden
6. Institute of Clinical SciencesSahlgrenska Academy, University of Gothenburg Gothenburg Sweden
7. Region Västra GötalandGeriatric Medicine, Sahlgrenska University Hospital Mölndal Sweden