1. From the Department of Obstetrics and Gynecology (K.H.L., R.J.K.), Helsinki University Central Hospital, Helsinki, Finland; Folkhälsan Research Center (K.H.L., M.R., P.-H.G.), Biomedicum, Helsinki, Finland; Department of Medicine (M.R., P.-H.G.), Division of Nephrology, Helsinki University Central Hospital, Helsinki, Finland; and the Department of Obstetrics and Gynecology (K.H.L.), Karolinska Institute, Stockholm, Sweden.