1. Division of Minerva Medical Research Institute (A.K., R.B.), 00290 Helsinki, Finland
2. Department of Medicine (A.K., J.W., R.B., K.H.P., H.Y.-J.), Department of Psychiatry, University of Helsinki, FIN-00029 Helsinki, Finland
3. Division of Obesity Research Unit (K.H.P.), Department of Psychiatry, University of Helsinki, FIN-00029 Helsinki, Finland
4. Division of Diabetes, The Finnish Twin Cohort Study, Department of Public Health (K.H.P.), Department of Psychiatry, University of Helsinki, FIN-00029 Helsinki, Finland