Inclusion Criteria:  Children who admitted to the Neonatal intensive care unit and/or those who were born at the obstetrics unit and followed up with their mothers between January 2006 - December 2008 and reevaluated at school age (5-7 years old) during the study.  None of major anomalies, Patients who come to the school-age assessment Accept the informed consent form  Exclusion Criteria:  The presence of major anomalies, Patients who did not come to the school-age assessment Rejected the informed consent form