Learning disabilities in children with birth weights less than or equal to 1500 grams.
D002140:California; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007230:Infant, Low Birth Weight / Q000523:psychology*; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000401:mortality; D007361:Intelligence Tests; D007859:Learning Disabilities / Q000453:epidemiology*; D008137:Longitudinal Studies; D008297:Male; D009422:Nervous System Diseases / Q000453:epidemiology