1. From the Division of Obstetrics and Prenatal Medicine, Department of Obstetrics and Gynecology (A.L.B., C.J.M.d.G., S.H.B., E.A.P.S.), and Departments of Internal Medicine (E.J.S., M.P.S.S.), Clinical Genetics (B.A.O.), and Epidemiology and Biostatistics (C.M.v.D.), University Medical Center Rotterdam, Rotterdam, The Netherlands; the Department of Obsterics and Gynecology (C.J.M.d.G.), Haaglanden Medical Center, The Hague, The Netherlands; the Department of Obstetrics and Gynecology (R.P.),...