1 Geriatric Medicine, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
2 Region Västra Götaland, Geriatric Medicine Clinic, Sahlgrenska University Hospital, Mölndal, Sweden.
3 Department of Orthopaedic Surgery, Skaraborg Hospital, Skövde, Sweden.
4 Department of Endocrinology, Sahlgrenska University Hospital, Gothenburg, Sweden.