1. From The Generation R Study Group (B.O.V., V.W.V.J.), Department of Epidemiology and Biostatistics (B.O.V., V.W.V.J., A.H., J.C.M.W.), Department of Obstetrics and Gynecology (B.O.V., J.W.W., E.A.P.S.), and Department of Pediatrics (V.W.V.J.), Erasmus Medical Center, Sophia Children’s Hospital, University Medical Center Rotterdam, Rotterdam, the Netherlands.