RT Journal Article SR Electronic T1 Fantoms 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 F157 OP F157 VO 94 IS 3 A2 Ben Stenson YR 2009 UL http://fn.bmj.com/content/94/3/F157.abstract AB