The association of maternal and fetal factors with the development of mental deficiency.  II.  Relationship to maternal age, birth order, previous reproductive loss and degree of mental deficiency.
D001722:Birth Order; D005333:Fetus; D006801:Humans; D008607:Intellectual Disability / Q000209:etiology*; D008423:Maternal Age; D012098:Reproduction
MENTAL DEFICIENCY/etiology and pathogenesis