1. Department of Public Health University of Helsinki Helsinki Finland
2. Finnish Cancer Registry Institute for Statistical and Epidemiological Cancer Research Helsinki Finland
3. Institute for Molecular Medicine Finland (FIMM) University of Helsinki Helsinki Finland
4. Washington University School of Medicine Department of Psychiatry St. Louis Missouri
5. National Institute for Health and Welfare Helsinki Finland
6. Institute of Public Health and Clinical Nutrition University of Eastern Finland Kuopio Finland
7. Wellcome Trust Sanger Institute Hinxton Cambridge UK