1. From the Departments of Chronic Disease Prevention (M.S.-L., R.K., M.T., H.-M.M., P.H., J.G.E., E.K.) and Children and Families (M.-R.J., M.V.), National Institute for Health and Welfare, Oulu and Helsinki, Finland; Institute of Health Sciences (M.S.-L., M.T., M.-R.J.) and Department of Obstetrics and Gynecology, Medical Research Center Oulu, Oulu University Hospital (M.V., E.K.), University of Oulu, Oulu, Finland; Biocenter Oulu, Oulu, Finland (M.-R.J.); Department of Pediatrics and Adolescence,...