1. Department of Medicine Huddinge; Karolinska Institute; Stockholm Sweden
2. Geriatric Medicine; Center for Bone Research at the Sahlgrenska Academy; Institute of Medicine; University of Gothenburg; Gothenburg Sweden
3. Department of Orthopaedic Surgery; Skaraborg Hospital; Skövde Sweden
4. School of Bioscience; University of Skövde; Skövde Sweden