1 Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, 431 80, Mölndal, Sweden.
2 Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, 431 80, Mölndal, Sweden. dan.mellstrom@vgregion.se.
3 Center for Bone and Arthritis Research (CBAR), Sahlgrenska Academy, University of Gothenburg, 413 45, Gothenburg, Sweden. dan.mellstrom@vgregion.se.