Within these visits anthropometric parameters (height, head circumference and weight), data on body composition (Pea Pod®) & bio-impedance measurements will be collected. Atopy will be determined by the clinical scoring system SCORAD. The neurodevelopmental outcome will be assessed by the Bayley Scale at 12 & 24 month corrected for prematurity and at 3 years of age. Furthermore, K-ABC (Kaufmann assessment battery for children) will be performed at 5 years of age.