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 F1 OP F1 VO 90 IS 1 A1 Martin Ward Platt YR 2005 UL http://fn.bmj.com/content/90/1/F1.abstract AB