1. Max Planck Institute for Demographic Research Rostock Germany
2. Department of Epidemiology, Biostatistics and Biodemography University of Southern Denmark Odense Denmark
3. Centre for Demographic Studies Barcelona Spain
4. School of Geography and Sustainable Development University of St. Andrews St. Andrews Scotland United Kingdom
5. Department of Geriatric Medicine Odense University Hospital Odense Denmark
6. Danish Aging Research Center University of Southern Denmark Odense Denmark