1. Department of Public Health and Caring Sciences/Geriatrics, Uppsala University, Uppsala, Sweden;
2. School of Health and Social Studies, Dalarna University, Falun, Sweden;
3. Department of Medical Sciences, Uppsala University, Uppsala, Sweden;
4. Uppsala Clinical Research Center, Uppsala University, Uppsala, Sweden;
5. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.