RT Journal Article SR Electronic T1 Atoms JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 593 OP 593 VO 89 IS 7 A1 Howard Bauchner YR 2004 UL http://adc.bmj.com/content/89/7/593.2.abstract AB