RT Journal Article SR Electronic T1 The wisdom of Archimedes JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 95 OP 96 DO 10.1136/adc.2004.064287 VO 91 IS 2 A1 B Phillips YR 2006 UL http://adc.bmj.com/content/91/2/95.1.abstract AB