1. Sahlgrenska Osteoporosis Centre at Institute of Medicine, Sahlgrenska Academy at University of Gothenburg , Gothenburg SE-405 30 , Sweden
2. Department of Drug Treatment, Sahlgrenska University Hospital, Region Västra Götaland , Gothenburg SE-413 45 , Sweden
3. Research Centre for Integrative Physiology and Pharmacology, Institute of Biomedicine and Turku Center for Disease Modeling, University of Turku , Turku FI-20014 , Finland
4. Department of Clinical Chemistry, Sahlgrenska University Hospital , Gothenburg SE-413 45 , Sweden
5. Mary McKillop Institute for Health Research, Australian Catholic University , Melbourne, VIC 3000 , Australia