1. Medical Research Council Integrative Epidemiology Unit University of Bristol Bristol UK
2. Population Health Sciences Bristol Medical School University of Bristol Oakfield Grove Barley House Bristol UK
3. School of Economics University of Bristol UK
4. Erasmus School of Economics Erasmus University Rotterdam Rotterdam The Netherlands
5. School of Education University of Bristol Bristol UK
6. School of Psychological Science University of Bristol Bristol UK
7. K.G. Jebsen Center for Genetic Epidemiology Department of Public Health and Nursing Norwegian University of Science and Technology Trondheim Norway