Neurodevelopmental impairment was defined as cerebral palsy, a Gross Motor Function Classification System level of at least 1 (on a scale of 0 [normal] to 5 [most impaired]), or a cognitive score ...

Cognitive outcome was assessed with the use of the Bayley Scales of Infant Development II, 17 where a mean (±SD) score of 100±15 was normal on the Mental Development Index and Psychomotor ...