title: Independent effects of maternal age and birth order on the incidence of selected congenital malformations.
mesh_terms: D000293:Adolescent; D000328:Adult; D000757:Anencephaly / Q000453:epidemiology; D001006:Anus, Imperforate / Q000453:epidemiology; D001722:Birth Order; D002971:Cleft Lip / Q000453:epidemiology; D002972:Cleft Palate / Q000453:epidemiology; D000013:Congenital Abnormalities / Q000453:epidemiology*; D004314:Down Syndrome / Q000453:epidemiology; D005260:Female; D005532:Foot Deformities, Congenital; D006330:Heart Defects, Congenital / Q000453:epidemiology; D006554:Hernia, Umbilical / Q000453:epidemiology; D006801:Humans; D006849:Hydrocephalus / Q000453:epidemiology; D007021:Hypospadias / Q000453:epidemiology; D007231:Infant, Newborn; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy; D016135:Spinal Dysraphism / Q000453:epidemiology; D013576:Syndactyly / Q000453:epidemiology; D014138:Tracheoesophageal Fistula / Q000453:epidemiology; D014481:United States