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 779 OP 780 DO 10.1136/adc.57.10.779 VO 57 IS 10 A1 P D Phelan YR 1982 UL http://adc.bmj.com/content/57/10/779.abstract AB