1. The Generation R Study Group (L.A., V.A.A.V.H., V.W.V.J.), Erasmus Medical Center, 3000 CA Rotterdam, The Netherlands
2. Departments of Pediatrics (L.A., V.W.V.J., A.C.S.H.-K.), Erasmus Medical Center, 3000 CA Rotterdam, The Netherlands
3. Epidemiology (L.A., V.A.A.V.H., A.H., J.C.M.W., V.W.V.J.), Erasmus Medical Center, 3000 CA Rotterdam, The Netherlands
4. Obstetrics and Gynecology (E.A.P.S.), Erasmus Medical Center, 3000 CA Rotterdam, The Netherlands