 The evaluation will be conducted in the presence of parents or caregivers in a safe surface with room for the child move around during the evaluation. The examiner will interact with the child to encourage response, but physical facilitation of movement should be avoided. During the evaluation, they are punctuated behaviors more or less mature within the motor repertoire of the child in each position supine, prone, sitting and standing. This repertoire is called motor window. All items priced within the window motor and the window motor to the previous items are scored. The evaluation of the end, the child will receive a score based on the sum of the items scored on each posture, called raw score. This score will be observed in a standardized chart to find the baby development percentile according to the chronological age or corrected. Percentiles instrument standards are: 5, 10, 25, 50, 75. According to this percentile babys development can be classified into three categories: normal or typical percentile 25, suspicious BSDI-III: Bayley Scales of Infant and Toddler Development third edition: The Bayley Scales of Infant and Toddler Development, Third Edition, will be used for assessment of neurodevelopment at 12 and 18 months corrected age. The scales will be administered at the hospital clinic, on the same day of each follow-up visit, by a psychologist who was blinded to group allocation. Cognitive, motor, and language development will be considered normal if higher than 89; below average if 80 to 89; borderline if 70 to 79; and extremely low if less or equal 69. Examine all the facets of a young childs development according manual. 