RT Journal Article SR Electronic T1 Epistle JF Archives of disease in childhood - Education & practice edition JO Arch Dis Child Educ Pract Ed FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 169 OP 169 DO 10.1136/adc.2010.204883 VO 95 IS 6 A1 Ian Wacogne YR 2010 UL http://ep.bmj.com/content/95/6/169.abstract AB