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 1 OP 1 DO 10.1136/adc.2009.180059 VO 95 IS 1 A2 Ian Wacogne YR 2010 UL http://ep.bmj.com/content/95/1/1.abstract AB