title: MENTAL RETARDATION IN EARLY CHILDHOOD: A LONGITUDINAL STUDY OF 143 INFANTS.
mesh_terms: D001720:Birth Injuries; D001927:Brain Diseases; D002648:Child; D002675:Child, Preschool; D000013:Congenital Abnormalities; D004314:Down Syndrome; D004495:Education of Persons with Intellectual Disabilities; D005693:Galactosemias; D006801:Humans; D007037:Hypothyroidism; D007223:Infant; D008607:Intellectual Disability; D007361:Intelligence Tests; D008137:Longitudinal Studies; D010661:Phenylketonurias; D012961:Sociology
keywords: ABNORMALITIES; BIRTH INJURY; BRAIN DISEASES; CHILD; EDUCATION OF MENTALLY RETARDED; GALACTOSEMIA; HYPOTHYROIDISM; INFANT; INTELLIGENCE TESTS; MENTAL RETARDATION; MONGOLISM; PHENYLKETONURIA; SOCIOLOGY