Mortality and morbidity in very low birthweight infants.
D002658:Developmental Disabilities / Q000453:epidemiology; D006233:Persons with Disabilities; D005500:Follow-Up Studies; D006801:Humans; D007226:Infant Mortality; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D008607:Intellectual Disability / Q000453:epidemiology; D007361:Intelligence Tests