PT - JOURNAL ARTICLE ED - , TI - Withdrawn by author AID - 10.1136/fetalneonatal-2012-301809.224a DP - 2012 Apr 01 TA - Archives of Disease in Childhood - Fetal and Neonatal Edition PG - A69--A69 VI - 97 IP - Suppl 1 4099 - http://fn.bmj.com/content/97/Suppl_1/A69.2.short 4100 - http://fn.bmj.com/content/97/Suppl_1/A69.2.full SO - Arch Dis Child Fetal Neonatal Ed2012 Apr 01; 97