RT Journal Article SR Electronic T1 Cause and effect? JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 984 OP 984 VO 89 IS 10 A1 I Rodd YR 2004 UL http://adc.bmj.com/content/89/10/984.1.abstract AB