1. From the Department of Epidemiology and Public Health (M.-R.J., U.S., V.K., L.L., B.X., P.E.), Imperial College London, United Kingdom; Oxford Centre for Diabetes, Endocrinology, and Metabolism (M.I.M.), University of Oxford, United Kingdom; and Departments of Public Health and General Practice (M.-R.J., L.L., P.Z., P.R.) and Obstetrics and Gynaecology (A.-L.H.), University of Oulu, Oulu Regional Institute of Occupational Health (J.L.), Finland.