1Region Västra Götaland, Geriatric Medicine, Sahlgrenska University Hospital, Mölndal, Sweden
2Sahlgrenska Osteoporosis Centre, Geriatric Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
3Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, VIC, Australia
4Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA