1. Angered Primary Health Care Centre, Gothenburg, Sweden;
2. Department of Dermatology and Venereology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden;
3. Brämhult Primary Health Care Centre, Borås, Sweden;
4. Department of Geriatric Medicine, South Älvsborg Hospital, Borås, Sweden;
5. Cleopatra Medical Centre, Gothenburg, Sweden;
6. Department of Medicine, South Älvsborg Hospital, Borås, Sweden;
7. Section for Endocrinology, Institution of Medicine, Sahlgrenska University Hospital at Sahlgrenska Academy University of Gothenburg, Gothenburg, Sweden