1. Population Research Unit, Department of Social Research, University of Helsinki, Helsinki, Finland
2. Epidemiology, Biostatististics and Biodemography, Department of Public Health, University of Southern Denmark, Denmark
3. OPEN—Odense Patient data Explorative Network, Odense University Hospital and Department of Clinical Research, University of Southern Denmark
4. Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Finland
5. Department of Public Health, University of Helsinki, Finland
6. Welcome Trust Sanger Institute, UK
7. Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden