1. The Generation R Study Group (O.G., R.G., D.H.M.H., B.D., V.W.V.J.), 3015 CE Rotterdam, The Netherlands
2. Department of Pediatrics (O.G., R.G., D.H.M.H., L.D., V.W.V.J.), 3015 CE Rotterdam, The Netherlands
3. Department of Epidemiology (O.G., R.G., D.H.M.H., A.H., V.W.V.J.), 3015 CE Rotterdam, The Netherlands
4. Department of Radiology (R.M.), Radboud University Nijmegen, 6500 HB Nijmegen, The Netherlands
5. Nutricia Research (M.A.-B., E.M.v.d.B.), 3584 CT Utrecht, The Netherlands
6. Department of Obstetrics and Gynecology (E.A.P.S.), Erasmus University Medical Center, 3015 CE Rotterdam, The Netherlands