RT Journal Article SR Electronic T1 CORRECTION JF Archives of Disease in Childhood - Fetal and Neonatal Edition JO Arch Dis Child Fetal Neonatal Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP F312 OP F312 DO 10.1136/adc.2008.152322corr1 VO 94 IS 4 YR 2009 UL http://fn.bmj.com/content/94/4/F312.2.abstract AB