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 F156 OP F156 DO 10.1136/adc.20065.082263corr1 VO 92 IS 2 YR 2007 UL http://fn.bmj.com/content/92/2/F156.2.abstract AB