1. Department of Non-communicable Disease Epidemiology; London School of Hygiene & Tropical Medicine; London UK
2. Departments of Preventive Medicine and Medicine (Cardiology); Northwestern University Feinberg School of Medicine; Chicago IL USA
3. Faculty of Health Sciences; University of Beira Interior; Covilha Portugal
4. Population Health Sciences, Bristol Medical School; University of Bristol; Bristol UK
5. Department of Social Medicine; University of Bristol; Bristol UK
6. MRC Integrative Epidemiology Unit, School of Social and Community Medicine; University of Bristol; Bristol UK
7. Department of Twin Research & Genetic Epidemiology; King's College London; London UK
8. Northwestern University; Chicago USA