RT Journal Article SR Electronic JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 99 OP 99 DO 10.1136/adc.78.1.99 VO 78 IS 1 YR 1998 UL http://adc.bmj.com/content/78/1/99.abstract AB