AU - Guillén Ú, DeMauro S, Ma L, et al TI - Relationship between attrition and neurodevelopmental impairment rates in extremely preterm infants at 18 to 24 months: A systematic review PT - JOUR DP - 2012 TA - Archives of Pediatrics & Adolescent Medicine pages = {178-184}, VI - 166 IP - 2 AID - 10.1001/archpediatrics.2011.616 [doi] 4100 - http://dx.doi.org/10.1001/archpediatrics.2011.616 SO - Archives of Pediatrics & Adolescent Medicine February 1, 2012 166(2):178