1. Research Unit for General Practice, Department of Public Health, University of Southern Denmark, 5000 Odense, Denmark
2. Danish Aging Research Center, Department of Public Health, University of Southern Denmark, 5000 Odense, Denmark
3. Interdisciplinary Centre on Population Dynamics (Cpop), University of Southern Denmark, 5230 Odense, Denmark
4. Department of Language, Culture, History and Communication, University of Southern Denmark, 5230 Odense, Denmark
5. Epidemiology, Biostatistics and Biodemography, Department of Public Health, University of Southern Denmark, 5000 Odense, Denmark