title: FACTORS AFFECTING MOTOR PERFORMANCE IN FOUR-MONTH-OLD INFANTS.
mesh_terms: D001722:Birth Order; D001724:Birth Weight; D044383:Black People; D006128:Growth; D006801:Humans; D007223:Infant; D007360:Intelligence; D009048:Motor Skills; D009460:Neurologic Examination; D012723:Sex
keywords: BIRTH ORDER; BIRTH WEIGHT; GROWTH; INFANT; INTELLIGENCE; MOTOR SKILLS; NEGROES; NEUROLOGIC EXAMINATION; SEX