RT Journal Article SR Electronic T1 Dr. Purcell comments JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 250 OP 250 DO 10.1136/adc.52.3.250-a VO 52 IS 3 A1 Purcell, Michael YR 1977 UL http://adc.bmj.com/content/52/3/250.2.abstract AB