RT Journal Article SR Electronic T1 With commentary JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 928 OP 928 DO 10.1136/adc.55.12.928 VO 55 IS 12 A1 J A Walker-Smith YR 1980 UL http://adc.bmj.com/content/55/12/928.abstract AB