1. Danish Aging Research Center, Epidemiology, Biostatistics and Biodemography, Department of Public Health, University of Southern Denmark, Odense C
2. Center for Clinical Research and Prevention, Bispebjerg and Frederiksberg Hospitals, Denmark
3. Interdisciplinary Center on Population Dynamics, University of Southern Denmark, Odense C
4. Department of Psychology, University of Minnesota, Minneapolis
5. Department of Clinical Genetics and Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Denmark