USC, Center for Economic and Social Research (CESR), New York University (NYU), Harvard University - Department of Psychology, Harvard University - Department of Economics, Harvard University - Department of Economics, Icelandic Heart Association, Government of the United States of America - Laboratory of Epidemiology, Demography, and Biometry, Government of the United States of America - Laboratory of Epidemiology, Demography, and Biometry, Massachusetts General Hospital - Center for Human Genetics Research, Icelandic Heart Association, Stockholm School of Economics - Department of Economics, Karolinska Institutet - Department of Medical Epidemiology and Biostatistics, McKinsey Consulting Group, Yale University, Law School, Students, University of Wisconsin - Madison - Department of Medicine, Stanford University, Northwestern University, University of Wisconsin - Madison - Department of Sociology, University of Wisconsin - Madison - Department of Sociology, Karolinska Institutet - Department of Medical Epidemiology and Biostatistics, Karolinska Institutet - Department of Medical Epidemiology and Biostatistics and Karolinska Institutet - Department of Medical Epidemiology and Biostatistics