ologic and developmental disability at six years of age after extremely pre- term birth. N Engl .1 Med. 2005;352(1):9-19. 25. Bhutta AT, Cleves MA, Casey PH, Cradock MM, Anand KJS. Cognitive and behavioral outcomes of school-aged children who were born pretenn: a meta-analysis. JAMA. 2002;288(6):728-737