title: A NEW APPROACH IN THE STUDY OF MENTAL RETARDATION.
mesh_terms: D002648:Child; D005260:Female; D005823:Genetics; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008607:Intellectual Disability; D008431:Maternal-Fetal Exchange; D008659:Metabolic Diseases; D010661:Phenylketonurias; D011247:Pregnancy
keywords: CHILD; GENETICS; INFANT; INFANT, NEWBORN; MATERNAL-FETAL EXCHANGE; MENTAL RETARDATION; METABOLIC DISEASES; PHENYLKETONURIA