RT Journal Article SR Electronic T1 Management of postoperative pain in children 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 ep14 OP ep19 DO 10.1136/adc.2004.070888 VO 92 IS 1 A1 N S Morton YR 2007 UL http://ep.bmj.com/content/92/1/ep14.abstract AB